McGraw Hill Math

Excel in your academics by accessing McGraw Hill Math Grade 7 Answer Key PDF Lesson 20.2 Changing from Metric Units to Customary Units existing for free of cost.

McGraw-Hill Math Grade 7 Answer Key Lesson 20.2 Changing from Metric Units to Customary Units

Exercises

CONVERT

Question 1.
If each person on a hike is supposed to carry 1.75 liters of water, how many gallons of water would you need to bring for a group of 45 people?
Answer:
20.8 gallons,
Explanation:
If each person on a hike is supposed to carry 1.75 liters of water,
1 gallon = 0.264 liters,
1.75 L = 0.264 x 1.75 = 0.462 Gallon,
Number of gallons of water would need to bring for a group of 45 people,
0.462 x 45 = 20.8 gallons.

Question 2.
Every camper is served .15 kilograms of cereal each morning. If there are 12 campers, how many pounds of cereal will you need to bring for a 7-day trip?
Answer:
27.8 lb,
Explanation:
Every camper is served .15 kilograms of cereal each morning.
If there are 12 campers,
0.15 x 12 = 1.8 kg,
Total number of pounds of cereal would need to bring for a 7-day trip,
1.8 x 7 = 12.6 kg,
1 kg = 2.205 pounds,
12.6 kg = 2.205 x 12.6 = 27.783 or 27.8 lbs.

Question 3.
11 kilograms is about how many ounces?
Answer:
388.1 oz,
Explanation:
1 kg = 35.274 ounce,
11 kg = 35.274 x 11 = 388.1 oz.

Question 4.
A 3-meter diving board is how many feet above the pool?
Answer:
9.84 ft,
Explanation:
1 meter = 3.280 feet,
3 m = 3.280 x 3 = 9.84 ft.

Question 5.
A 15-meter length of rope is how many feet long?
Answer:
49.2 ft,
Explanation:
1 meter = 3.280 feet,
15 m = 3.280 x 3 = 49.2 ft.

Question 6.
A dog weighs 22 kilograms. How many pounds is that?
Answer:
48.5 lb,
Explanation:
1 kg = 2.205 pounds,
22 kg = 2.205 x 22 = 48.5 lb.

Question 7.
A 50-meter pool is the standard size for the Olympics. What is that length in feet?
Answer:
164.04 ft,
Explanation:
1 meter = 3.280 feet,
50 m = 3.280 x 50 = 164.04 ft.

Question 8.
A reservoir contains 11,250,000 kiloliters of water. How many gallons is that?
Answer:
2,961,000,000.
Explanation:
1 kiloliter = 263.2 gallons,
11,250,000 kiloliters = 263.2 x 11,250,000 = 2,961,000,000 gallons.

Question 9.
The local middle school sponsored a 6-kilometer race for everyone to run. What is the length of the race in miles?
Answer:
3.726 miles,
Explanation:
1 kilometer = 0.621 miles,
6 kilometers = 0.621 x 6 = 3.726 miles.

Question 10.
A jet that travels at 4,200 kilometers per hour is traveling how many miles per hour?
Answer:
2608.2 miles per hour.
Explanation:
A jet that travels at 4,200 kilometers per hour.
1 kilometer = 0.621 miles,
4200 kilometers = 0.621 x 4200 = 2608.2 miles per hour.

Question 11.
How many inches is 300 centimeters? How many feet?
Answer:
118.2 inches; 9.9 ft.
Explanation:
1 centimeter = 0.394 inches,
300 cm = 0.394 x 300 = 118.2 inches,
1 centimeter = 0.0328  feet,
300 cm = 0.0328 x 300 = 9.9 ft.

Question 12.
The average defensive lineman on the football team at Bloomingdale High School weighs 110 kilograms. The average offensive lineman weighs 240 pounds. Which position has a lower average weight?
Answer:
The offensive linemen have a lower average weight.
Explanation:
The average defensive lineman on the football team at Bloomingdale High School weighs 110 kilograms.
Convert kilograms to pounds,
1 kg = 2.205 pounds,
110 kg = 110 x 2.205 = 242.55 pounds,
The average offensive lineman weighs 240 pounds.
When compare both the offensive linemen weighs least.

Excel in your academics by accessing McGraw Hill Math Grade 7 Answer Key PDF Lesson 20.1 Changing from Customary Units to Metric Units existing for free of cost.

McGraw-Hill Math Grade 7 Answer Key Lesson 20.1 Changing from Customary Units to Metric Units

Exercises

CONVERT

Question 1.
The weight limit on a bridge is 16,000 pounds. What is the weight limit in kilograms?
Answer:
7,264 kg
Explanation:
The weight limit on a bridge is 16,000 pounds.
1 pound = 0.454 kg
The weight limit in kilograms on a bridge,
16000 x 0.454 = 7,264 kg

Question 2.
The directions on a plant fertilizer bag recommend using 3 pounds for a 4 × 10 garden. How many grams is that?
Answer:
1,362 g
Explanation:
The directions on a plant fertilizer bag recommend using 3 pounds for a 4 × 10 garden.
1 pound = 454 grams,
3 pounds = 454 x 3 = 1,362 g.

Question 3.
A 2-ton truck weighs how many kilograms?
Answer:
1814.36 kg
Explanation:
1 ton = 907.18 kg
2 ton truck weighs = 907.18 x 2 = 1814.36 kg.

Question 4.
A car with a 23-gallon gas tank holds how many liters of gas?
Answer:
87.055 L
Explanation:
1 gallon = 3.785 L
23 gallon gas tank holds = 3.785 x 23 = 87.055 L

Question 5.
A 24-ounce fruit juice bottle contains how many liters of fluid?
Answer:
0.7098 L
Explanation:
1 ounce = 0.029574 L
Number of liters contained by 24 ounce fruit juice bottle,
24 x 0.029574 =  0.7098 L

Question 6.
Jasmine has a 150-ft length of rope. Does she have enough rope to reach the bottom of a 40-meter cliff?
Answer:
yes, the rope is 45.75 m long.
Explanation:
Jasmine has a 150-ft length of rope.
Height of a cliff is 40-meter cliff.
1 feet = 0.305 m
150 feet = 150 x 0.305 = 45.75 m.

Question 7.
A 3-pound lobster weighs how many kilograms?
Answer:
1.362 kg
Explanation:
1 pound = 0.454 kg,
3 pounds of lobster weighs = 3 x 0.454 = 1.362 kg.

Question 8.
Would you rather have 2.4 pounds or 1,000 grams of gold?
Answer:
2.4 pounds of gold.
Explanation:
1 pound = 453.592 g
2.4 pounds = 453.529 x 2.4 = 1088.64 g
So, there is 2.4 pounds of gold.

Question 9.
About how many meters tall is a 100-ft tree?
Answer:
30.5 m
Explanation:
1 feet = 0.305 m
100 feet = 0.305 x 100 = 30.5 m.

Question 10.
How many meters tall is a 9.5-foot tree?
Answer:
2.9 m
Explanation:
1 feet = 0.305 m
9.5 feet = 0.305 x 9.5 = 2.89 or 2.9 m.

Excel in your academics by accessing McGraw Hill Math Grade 7 Answer Key PDF Lesson 2.2 Estimating Products existing for free of cost.

McGraw-Hill Math Grade 7 Answer Key Lesson 2.2 Estimating Products

Exercise

Question 1.
34 × 71
Answer:
2,100

Explanation:
Round both numbers, 34 as 30 and 71 as 70.
Ignore the zeros and multiply the digits.
3 x 7 = 21
Count the zeros and tack them onto the end of your product.
34 x 71 = 2,100.

Question 2.
456 × 33
Answer:
15,000

Explanation:
Round both numbers, 456 as 500 and 33 as 30.
Ignore the zeros and multiply the digits.
5 x 3 = 15
Count the zeros and tack them onto the end of your product.
456 x 33 = 15,000.

Question 3.
47 × 67
Answer:
3,500

Explanation:
Round both numbers, 47 as 50 and 67 as 70.
Ignore the zeros and multiply the digits.
5 x 7 = 35
Count the zeros and tack them onto the end of your product.
47 x 67 = 3,500.

Question 4.
731 × 55
Answer:
42,000

Explanation:
Round both numbers, 731 as 700 and 55 as 60.
Ignore the zeros and multiply the digits.
7 x 6 = 42
Count the zeros and tack them onto the end of your product.
731 x 55 = 42,000.

Question 5.
78 × 357
Answer:
32,000

Explanation:
Round both numbers, 78 as 80 and 357 as 400.
Ignore the zeros and multiply the digits.
8 x 4 = 32
Count the zeros and tack them onto the end of your product.
78 x 357 = 32,000.

Question 6.
129 × 157
Answer:
20,000

Explanation:
Round both numbers, 129 as 100 and 157 as 200.
Ignore the zeros and multiply the digits.
1 x 2 = 2
Count the zeros and tack them onto the end of your product.
129 x 157 = 20,000.

Question 7.
323 × 489
Answer:
150,000

Explanation:
Round both numbers, 323 as 300 and 489 as 500.
Ignore the zeros and multiply the digits.
3 x 5 = 15
Count the zeros and tack them onto the end of your product.
323 x 489 = 150,000.

Question 8.
417 × 37
Answer:
16,000

Explanation:
Round both numbers, 417 as 400 and 37 as 40.
Ignore the zeros and multiply the digits.
4 x 4 = 16
Count the zeros and tack them onto the end of your product.
417 x 37 = 16,000.

Question 9.
53 × 49
Answer:
2,500

Explanation:
Round both numbers, 53 as 50 and 49 as 50.
Ignore the zeros and multiply the digits.
5 x 5 = 25
Count the zeros and tack them onto the end of your product.
53 x 49 = 2,500.

Question 10.
515 × 79
Answer:
40,000

Explanation:
Round both numbers, 515 as 500 and 79 as 80.
Ignore the zeros and multiply the digits.
5 x 8 = 40
Count the zeros and tack them onto the end of your product.
515 x 79 = 40,000.

Question 11.
745 × 821
Answer:
560,000

Explanation:
Round both numbers, 745 as 700 and 821 as 800.
Ignore the zeros and multiply the digits.
7 x 8 = 56
Count the zeros and tack them onto the end of your product.
745 x 821 = 560,000.

Question 12.
475 × 71
Answer:
35,000

Explanation:
Round both numbers, 475 as 500 and 71 as 70.
Ignore the zeros and multiply the digits.
5 x 7 = 35
Count the zeros and tack them onto the end of your product.
475 x 71 = 35,000.

Question 13.
2701 × 23
Answer:
60,000

Explanation:
Round both numbers, 2701 as 3000 and 23 as 20.
Ignore the zeros and multiply the digits.
3 x 2 = 6
Count the zeros and tack them onto the end of your product.
2701 x 23 = 60,000.

Question 14.
77 × 74
Answer:
5,600

Explanation:
Round both numbers, 77 as 80 and 74 as 70.
Ignore the zeros and multiply the digits.
8 x 7 = 56
Count the zeros and tack them onto the end of your product.
77 x 74 = 5,600.

Question 15.
521 × 555
Answer:
300,000

Explanation:
Round both numbers, 521 as 500 and 555 as 600.
Ignore the zeros and multiply the digits.
5 x 6 = 30
Count the zeros and tack them onto the end of your product.
521 x 555 = 300,000.

Question 16.
303 × 251
Answer:
90,000

Explanation:
Round both numbers, 303 as 300 and 251 as 300.
Ignore the zeros and multiply the digits.
3 x 3 = 9
Count the zeros and tack them onto the end of your product.
303 x 251 = 90,000.

Question 17.
727 × 462
Answer:
350,000

Explanation:
Round both numbers, 727 as 700 and 462 as 500.
Ignore the zeros and multiply the digits.
7 x 5 = 35
Count the zeros and tack them onto the end of your product.
727 x 462 = 350,000.

Question 18.
92 × 177
Answer:
18,000

Explanation:
Round both numbers, 92 as 90 and 177 as 200.
Ignore the zeros and multiply the digits.
9 x 2 = 18
Count the zeros and tack them onto the end of your product.
92 x 177 = 18,000.

Question 19.
42 × 420
Answer:
16,000

Explanation:
Round both numbers, 42 as 40 and 420 as 400.
Ignore the zeros and multiply the digits.
4 x 4 = 16
Count the zeros and tack them onto the end of your product.
42 x 420 = 16,000.

Question 20.
499 × 55
Answer:
30,000

Explanation:
Round both numbers, 499 as 500 and 55 as 60.
Ignore the zeros and multiply the digits.
5 x 6 = 30
Count the zeros and tack them onto the end of your product.
499 x 55 = 30,000.

Excel in your academics by accessing McGraw Hill Math Grade 7 Answer Key PDF Lesson 2.1 Multiplying Whole Numbers existing for free of cost.

McGraw-Hill Math Grade 7 Answer Key Lesson 2.1 Multiplying Whole Numbers

Exercises Multiply

Question 1.

Answer:
60
Explanation:
The two factors 5 and 12 gives the as product 60.

Question 2.

Answer:
352
Explanation:
The two factors 32 and 11 gives the as product 352.

Question 3.

Answer:
133
Explanation:
The two factors 7 and 19 gives the as product 133.

Question 4.

Answer:
572
Explanation:
The two factors 44 and 13 gives the as product 572.

Question 5.

Answer:
861
Explanation:
The two factors 41 and 21 gives the as product 861.

Question 6.

Answer:
2,860
Explanation:
The two factors 55 and 52 gives the as product 2,860.

Question 7.

Answer:
1,641
Explanation:
The two factors 3 and 547 gives the as product 1,641.

Question 8.

Answer:
40,848
Explanation:
The two factors 444 and 92 gives the as product 40,848.

Question 9.

Answer:
2,376
Explanation:
The two factors 72 and 33 gives the as product 2,376.

Question 10.

Answer:
89,082
Explanation:
The two factors 1414 and 63 gives the as product 89,082.

Question 11.

Answer:
3,599
Explanation:
The two factors 59 and 61 gives the as product 3,599.

Question 12.

Answer:
1,083
Explanation:
The two factors 57 and 19 gives the as product 1,083.

Question 13.

Answer:
612
Explanation:
The two factors 68 and 9 gives the as product 612.

Question 14.

Answer:
161,296
Explanation:
The two factors 593 and 272 gives the as product 161,296.

Question 15.

Answer:
3,762
Explanation:
The two factors 38 and 99 gives the as product 3,762.

Question 16.

Answer:
183,090
Explanation:
The two factors 255 and 718 gives the as product 183,090.

Question 17.

Answer:
76,445
Explanation:
The two factors 5 and 15289 gives the as product 76,445.

Question 18.

Answer:
208,803
Explanation:
The two factors 427 and 489 gives the as product 208,803.

Question 19.

Answer:
1,519
Explanation:
The two factors 31 and 49 gives the as product 1,519.

Question 20.

Answer:
1,875
Explanation:
The two factors 75 and 25 gives the as product 1,875.

Question 21.

Answer:
625
Explanation:
The two factors 25 and 25 gives the as product 625.

Question 22.

Answer:
343
Explanation:
The two factors 49 and 7 gives the as product 343.

Question 23.

Answer:
7,225
Explanation:
The two factors 425 and 17 gives the as product 7,225.

Question 24.

Answer:
4,056
Explanation:
The two factors 52 and 78 gives the as product 4,056.

Question 25.

Answer:
68,820
Explanation:
The two factors 310 and 222 gives the as product 68,820.

Question 26.

Answer:
169
Explanation:
The two factors 13 and 13 gives the as product 169.

Question 27.

Answer:
1,323
Explanation:
The two factors 21 and 63 gives the as product 1,323.

Question 28.

Answer:
41,085
Explanation:
The two factors 45 and 913 gives the as product 41,085.

Question 29.

Answer:
36,663
Explanation:
The two factors 1111 and 33 gives the as product 36,663.

Question 30.

Answer:
42,174
Explanation:
The two factors 54 and 781 gives the as product 42,174.

Question 31.

Answer:
100,899
Explanation:
The two factors 333 and 303 gives the as product 100,899.

Question 32.

Answer:
1,081
Explanation:
The two factors 47 and 23 gives the as product 1,081.

Question 33.
The local produce store received an order for 75 bags of potatoes. 30 potatoes can fit into each bag. How
many potatoes will the store need to fill the bags?
Answer:
2,250 potatoes.
Explanation:
The local produce store received an order for 75 bags of potatoes.
30 potatoes can fit into each bag.
Total number of potatoes will the store need to fill the bags,
75 x 30 = 2,250 potatoes.

Question 34.
Steven is organizing his stamp collection into large envelopes. He plans to place 60 stamps in each envelope. If he can fill 22 envelopes, how many stamps are in Steven’s stamp collection?
Answer:
1320 stamps.
Explanation:
Steven plans to place 60 stamps in each envelope.
If he fill 22 envelopes,
Total number of stamps are there in Steven’s stamp collection,
60 x 22 = 1320 stamps.

Excel in your academics by accessing McGraw Hill Math Grade 7 Answer Key PDF Lesson 10.4 Estimating Decimal Sums and Differences existing for free of cost.

McGraw-Hill Math Grade 7 Answer Key Lesson 10.4 Estimating Decimal Sums and Differences

Exercises Estimate

Question 1.

Answer:
$34.45 + $22.52 = $56.97.

Explanation:
The addition of the decimals is $34.45 and $22.52 is $56.97.

Question 2.

Answer:
$55.11 + $$22.73 is $78.07.

Explanation:
The addition of the decimals $55.11 and $$22.73 is $78.07.

Question 3.

Answer:

Explanation:
The addition of the decimals $76.77+$2.31 is $78.08.

Question 4.

Answer:
$908.03-$37.56 = $870.47.

Explanation:
The subtraction of the decimals $908.03-$37.56 is $870.47.

Question 5.

Answer:
$32.77-$21.99 = $10.78.

Explanation:
The subtraction of the decimals $32.77-$21.99 is $10.78.

Question 6.

Answer:
$561.22-$2.10 = $559.12.

Explanation:
The subtraction of the decimals $561.22-$2.10 is $559.12.

Question 7.

Answer:
$77.55-$55.77 = $21.78.

Explanation:
The subtraction of the decimals $77.55-$55.77 is $21.78.

Question 8.

Answer:
$234.55-$222.99 = $011.56.

Explanation:
The subtraction of the decimals $234.55-$222.99 is $011.56.

Question 9.

Answer:
$45.32 + $99.01 = $144.33.

Explanation:
The addition of the decimals $45.32 and $99.01 which is $144.33.

Question 10.

Answer:
$10.08-$1.07 = $09.01.

Explanation:
The subtraction of the decimals $10.08-$1.07 is $09.01.

Question 11.

Answer:
$12.77 + $2.39 = $15.16.

Explanation:
The addition of the decimals $12.77 and $2.39 is $15.16.

Question 12.

Answer:
$14.57 + $217.66 = $232.23.

Explanation:
The addition of the decimals $14.57 and $217.66 is $232.23.

Question 13.

Answer:
$21.67-$18.33 = $03.34.

Explanation:
The subtraction of the decimals $21.67-$18.33 is $03.34.

Question 14.

Answer:
$2.33-$1.87 = $0.46.

Explanation:
The subtraction of the decimals $2.33-$1.87 is $0.46.

Question 15.

Answer:
$444.71 + $67.33 = $512.04.

Explanation:
The addition of the decimals $444.71 and $67.33 is $512.04.

Question 16.

Answer:
$232.47 + $1001.51 = $1233.98.

Explanation:
The addition of the decimals $232.47 and $1001.51 is $1233.98.

Question 17.

Answer:
$67.89 + $253.77 = $321.66.

Explanation:
The addition of the decimals $67.89 and $253.77 is $321.66.

Question 18.

Answer:
$7.52 + $75.20 = $82.72

Explanation:
The addition of the decimals $7.52 and $75.20 is $82.72.

Question 19.

Answer:
$2303.41 + $223.67 = $2527.08.

Explanation:
The addition of the decimals $2303.41 and $223.67 is $2527.08.

Question 20.

Answer:
$32.6 – $21.91 = $10.65.

Explanation:
The subtraction of the decimals $32.6 – $21.91 which is $10.65.

Excel in your academics by accessing McGraw Hill Math Grade 7 Answer Key PDF Lesson 10.3 Adding and Subtracting Money existing for free of cost.

McGraw-Hill Math Grade 7 Answer Key Lesson 10.3 Adding and Subtracting Money

Exercises Calculate

Question 1.

Answer:
$56 + $32 = $88.

Explanation:
The addition of $56 and $32 is $88.

Question 2.

Answer:
$22.71 + $5.20 = $17.51.

Explanation:
The addition of $22.71 and $5.20 is $17.51.

Question 3.

Answer:
$15-$12.40 = $2.6.

Explanation:
The subtraction of $15-$12.40 is $2.6.

Question 4.

Answer:
$11.06 + $0.32 = $11.38.

Explanation:
The addition of $11.06 and $.32 is $11.38.

Question 5.

Answer:
$10-$7.21 = $2.79.

Explanation:
The subtraction of $10-$7.21 is $2.79.

Question 6.

Answer:
$315.32-$297.61 = $17.71.

Explanation:
The subtraction of $315.32-$297.61 is $17.71.

Question 7.

Answer:
$89.45-$3.50 = $85.95.

Explanation:
The subtraction of $89.45-$3.50 is $85.95.

Question 8.

Answer:
$34-$4.77 = $29.23.

Explanation:
The subtraction of $34-$4.77 is $29.23.

Question 9.

Answer:
$1000.03-$88.4 = $911.61.

Explanation:
The subtraction of $1000.03-$88.4 is $911.61.

Question 10.

Answer:
$45 and $2.30 = $47.3.

Explanation:
The addition of $45 and $2.30 is $47.3.

Question 11.

Answer:
$89-$56.81 = $32.19.

Explanation:
The subtraction of $89-$56.81 is $32.19.

Question 12.

Answer:
$813-$7.71 = $805.29.

Explanation:
The subtraction of $813-$7.71 is $805.29.

Question 13.

Answer:
$5-$2.93 = $2.07.

Explanation:
The subtraction of $5-$2.93 is $2.07.

Question 14.

Answer:
$71.45-$3.56 = $67.89.

Explanation:
The subtraction of $71.45-$3.56 is $67.89.

Question 15.

Answer:
$8.55-$2.61 = $5.94.

Explanation:
The subtraction of $8.55-$2.61 is $5.94.

Question 16.

Answer:
$3.21-$2 = $1.21.

Explanation:
The subtraction of $3.21-$2 is $1.21.

Question 17.

Answer:
$1561-$87.87 = $1473.13.

Explanation:
The subtraction of $1561-$87.87 is $1473.13.

Question 18.

Answer:
$1987.23-$476.30 = $1,510.93.

Explanation:
The subtraction of $1987.23-$476.30 is $1,510.93.

Question 19.

Answer:
$81-$22.57 = $58.43.

Explanation:
The subtraction of $81-$22.57 is $58.43.

Question 20.

Answer:
$45.60-$7 = $38.6.

Explanation:
The subtraction of $45.60-$7 is $38.6.

Excel in your academics by accessing McGraw Hill Math Grade 7 Answer Key PDF Lesson 10.2 Subtracting Decimals existing for free of cost.

McGraw-Hill Math Grade 7 Answer Key Lesson 10.2 Subtracting Decimals

Exercises Subtract

Question 1.

Answer: The subtraction of decimals 15.45 – 7.82 is 7.63.

Explanation:
The subtraction of decimals 15.45 – 7.82 is 7.63.

Question 2.

Answer:
48.001 – 5.62 = 42.381.

Explanation:
The subtraction of decimals 48.001 – 5.62 is 42.381.

Question 3.

Answer:
88.88 – 2.97 = 5.9758.

Explanation:
The subtraction of decimals 88.88 – 2.97 is 5.9758.

Question 4.

Answer:
50.202 – 2.5005 = 47.7015.

Explanation:
The subtraction of decimals 50.202 – 2.5005 is 47.7015.

Question 5.

Answer:
10.3 – 4.777 = 5.523.

Explanation:
The subtraction of decimals 10.3 – 4.777 is 5.523.

Question 6.

Answer:
100.111 – 5.374 = 94.737.

Explanation:
The subtraction of decimals 100.111 – 5.374 is 94.737.

Question 7.

Answer:
565.002 – 12.345 = 552.657.

Explanation:
The subtraction of decimals 565.002 – 12.345 is 552.657.

Question 8.

Answer:
7.701 – 6.994 = 0.707.

Explanation:
The subtraction of decimals 7.701 – 6.994 is 0.707.

Question 9.

Answer:
5.5514 – 4.61 = 0.9414.

Explanation:
The subtraction of decimals 5.5514 – 4.61 is 0.9414.

Question 10.

Answer:
12.157 – 5.2 = 6.957.

Explanation:
The subtraction of decimals 12.157 – 5.2 is 6.957.

Question 11.

Answer:
89.7 – 63.63 = 26.07.

Explanation:
The subtraction of decimals 89.7 – 63.63 is 26.07.

Question 12.

Answer:
3.561 – 2.9872 = 0.5738.

Explanation:
The subtraction of decimals 3.561 – 2.9872 is 0.5738.

Question 13.

Answer:
4789.32 – 555.55 = 4233.77.

Explanation:
The subtraction of decimals 4789.32 – 555.55 is 4233.77.

Question 14.

Answer:
8.651 – 6.98 = 1.671.

Explanation:
The subtraction of decimals 8.651 – 6.98 is 1.671.

Question 15.

Answer:
45.87 – 33.999 = 11.871.

Explanation:
The subtraction of decimals 45.87 – 33.999 is 11.871.

Question 16.

Answer:
963.751 – 8.8 = 954.951.

Explanation:
The subtraction of decimals 963.751 – 8.8 is 954.951.

Question 17.

Answer:
8.789 – 1.79 = 6.999.

Explanation:
The subtraction of decimals 8.789 – 1.79 is 6.999.

Question 18.

Answer:
5.2 – 3.571= 1.629.

Explanation:
The subtraction of decimals 5.2 – 3.571 is 1.629.

Question 19.

Answer:
6.91 – 2.84 = 4.07.

Explanation:
The subtraction of decimals 6.91 – 2.84 is 4.07.

Question 20.

Answer:
8.888 – 2.913 = 5.975.

Explanation:
The subtraction of decimals 8.888 – 2.913 is 5.975.

Excel in your academics by accessing McGraw Hill Math Grade 7 Answer Key PDF Lesson 10.1 Adding Decimals existing for free of cost.

McGraw-Hill Math Grade 7 Answer Key Lesson 10.1 Adding Decimals

Exercises Add

Question 1.

Answer:
45.45 + 2.1 = 47.55.

Explanation:
The addition of decimals 45.45 and 2.1 is 47.55.

Question 2.

Answer:
33.7 + 41.22 = 74.92.

Explanation:
The addition of decimals 33.7 and 41.22 is 74.92.

Question 3.

Answer:
5.4 + 8.54 = 13.94.

Explanation:
The addition of decimals 5.4 and 8.54 is 13.94.

Question 4.

Answer:
2.22 + 3.001 = 5.221.

Explanation:
The addition of decimals 2.22 and 3.001 is 5.221.

Question 5.

Answer:
33.045 + 0.011 = 33.056.

Explanation:
The addition of decimals 33.045 and 0.011 is 33.056.

Question 6.

Answer:
9.0901 + 13.245 = 22.3351.

Explanation:
The addition of decimals 9.0901 and 13.245 is 22.3351.

Question 7.

Answer:
0.782 + 5.6 = 6.382.

Explanation:
The addition of decimals 0.782 and 5.6 is 6.382.

Question 8.

Answer:
454.32 + 2.111 = 456.431.

Explanation:
The addition of decimals 454.32 and 2.111 is 456.431.

Question 9.

Answer:
4.5 + 9.5001 = 14.0001

Explanation:
The addition of decimals 4.5 and 9.5001 is 14.0001.

Question 10.

Answer:
63.1 + 5.46 = 68.56.

Explanation:
The addition of decimals 63.1 and 5.46 is 68.56.

Question 11.

Answer:
2.22201 + 7.38 = 9.60201.

Explanation:
The addition of decimals 2.22201 and 7.38 is 9.60201.

Question 12.

Answer:
8.704 + 18.0001 = 23.7041.

Explanation:
The addition of decimals 8.704 and 18.0001 is 26.7041.

Question 13.

Answer:
4.147 + 5.963 = 10.11.

Explanation:
The addition of decimals 4.147 and 5.963 is 10.11.

Question 14.

Answer:
9.46 + 55.7222 = 65.1822.

Explanation:
The addition of decimals 9.46 and 55.7222 is 65.1822.

Question 15.

Answer:
0.00152 + 152.1522 = 152.15372.

Explanation:
The addition of decimals 0.00152 and 152.1522 is 152.15372.

Question 16.

Answer:
3.202 + 2.3031 = 5.5051.

Explanation:
The addition of decimals 3.202 and 2.3031 is 5.5051.

Question 17.

Answer:
9.781 + 1.832 = 11.613.

Explanation:
The addition of decimals 9.781 and 1.832 is 11.613.

Question 18.

Answer:
2.2222 + 8.888 = 11.1102.

Explanation:
The addition of decimals 2.2222 and 8.888 is 11.1102.

Question 19.

Answer:
478.654 + 3.9702 = 482.6242.

Explanation:
The addition of decimals 478.654 and 3.9702 is 482.6242.

Question 20.

Answer:
3.303 + 19.0771 = 22.3801.

Explanation:
The addition of decimals 3.303 and 19.0771 is 22.3801.

Excel in your academics by accessing McGraw Hill Math Grade 7 Answer Key PDF Lesson 7.1 Multiply Fractions and Whole Numbers existing for free of cost.

McGraw-Hill Math Grade 7 Answer Key Lesson 7.1 Multiply Fractions and Whole Numbers

Exercises Multiply

Question 1.
3 × \(\frac{1}{4}\)
Answer:
\(\frac{3}{4}\)
Explanation:
3 × \(\frac{1}{4}\)
Multiply whole number by the numerator and then place over denominator.
= \(\frac{3}{1}\) × \(\frac{1}{4}\)
= \(\frac{3}{4}\)

Question 2.
15 × \(\frac{2}{7}\)
Answer:
4\(\frac{2}{7}\)
Explanation:
15 × \(\frac{2}{7}\)
Multiply whole number by the numerator and then place over denominator.
= \(\frac{15}{1}\) × \(\frac{2}{7}\)
= \(\frac{30}{7}\)
= 4\(\frac{2}{7}\)

Question 3.
12 × –\(\frac{3}{8}\)
Answer:
-4\(\frac{1}{2}\)
Explanation:
12 × –\(\frac{3}{8}\)
Multiply whole number by the numerator and then place over denominator.
= \(\frac{12}{1}\) × –\(\frac{3}{8}\)
= –\(\frac{12 X 3}{8}\)
= \(\frac{36}{8}\)
= -4\(\frac{1}{2}\)

Question 4.
22 × \(\frac{3}{11}\)
Answer:
6
Explanation:
22 × \(\frac{3}{11}\)
Multiply whole number by the numerator and then place over denominator.
= \(\frac{22}{1}\) × –\(\frac{3}{11}\)
= \(\frac{22 X 3}{11}\)
= \(\frac{66}{11}\)
= 6

Question 5.
15 × –\(\frac{3}{20}\)
Answer:
-2\(\frac{1}{4}\)
Explanation:
15 × –\(\frac{3}{20}\)
Multiply whole number by the numerator and then place over denominator.
= \(\frac{15}{1}\) × –\(\frac{3}{20}\)
=-\(\frac{15 X 3}{20}\)
= –\(\frac{45}{20}\)
= –\(\frac{9}{4}\)
= -2\(\frac{1}{4}\)

Question 6.
31 × \(\frac{2}{17}\)
Answer:
3\(\frac{11}{17}\)
Explanation:
31 × \(\frac{2}{17}\)
Multiply whole number by the numerator and then place over denominator.
= \(\frac{31}{1}\) × \(\frac{2}{17}\)
= \(\frac{31 X 2}{17}\)
= \(\frac{62}{17}\)
= 3\(\frac{11}{17}\)

Question 7.
6 × \(\frac{7}{24}\)
Answer:
1\(\frac{3}{4}\)
Explanation:
6 × \(\frac{7}{24}\)
Multiply whole number by the numerator and then place over denominator.
= \(\frac{6}{1}\) × \(\frac{7}{24}\)
= \(\frac{6 X 7}{24}\)
= \(\frac{42}{24}\)
= \(\frac{7}{4}\)
= 1\(\frac{3}{4}\)

Question 8.
14 × \(\frac{10}{11}\)
Answer:
12\(\frac{8}{11}\)
Explanation:
14 × \(\frac{10}{11}\)
Multiply whole number by the numerator and then place over denominator.
= \(\frac{14}{1}\) × \(\frac{10}{11}\)
= \(\frac{14 X 10}{11}\)
= \(\frac{140}{11}\)
= 12\(\frac{8}{11}\)

Question 9.
16 × \(\frac{5}{36}\)
Answer:
2\(\frac{2}{9}\)
Explanation:
\(\frac{16}{1}\) × \(\frac{5}{36}\)
Multiply whole number by the numerator and then place over denominator.
= \(\frac{16 X 5}{36}\)
= \(\frac{80}{36}\)
= 2\(\frac{2}{9}\)

Question 10.
7 × \(\frac{2}{3}\)
Answer:
4\(\frac{2}{3}\)
Explanation:
7 × \(\frac{2}{3}\)
Multiply whole number by the numerator and then place over denominator.
= \(\frac{7}{1}\) × \(\frac{2}{3}\)
= \(\frac{7 X 2}{3}\)
= \(\frac{14}{3}\)
= 4\(\frac{2}{3}\)

Question 11.
16 × –\(\frac{3}{5}\)
Answer:
-9\(\frac{3}{5}\)
Explanation:
16 × \(\frac{3}{5}\)
Multiply whole number by the numerator and then place over denominator.
= \(\frac{16}{1}\) × \(\frac{3}{5}\)
= \(\frac{16 X 3}{5}\)
= \(\frac{93}{5}\)
= -9\(\frac{3}{5}\)

Question 12.
11 × \(\frac{11}{12}\)
Answer:
10\(\frac{1}{2}\)
Explanation:
10 × \(\frac{1}{2}\)
Multiply whole number by the numerator and then place over denominator.
= \(\frac{10}{1}\) × \(\frac{1}{2}\)
= \(\frac{10}{2}\)
= 10\(\frac{1}{2}\)

Question 13.
42 × \(\frac{5}{7}\)
Answer:
30
Explanation:
42 × \(\frac{5}{7}\)
Multiply whole number by the numerator and then place over denominator.
= \(\frac{42}{1}\) × \(\frac{5}{7}\)
= \(\frac{42 X 5}{7}\)
= \(\frac{210}{7}\)
= 30

Question 14.
20 × \(\frac{3}{40}\)
Answer:
1\(\frac{1}{2}\)
Explanation:
20 × \(\frac{3}{40}\)
Multiply whole number by the numerator and then place over denominator.
= \(\frac{20}{1}\) × \(\frac{3}{40}\)
= \(\frac{20 X 3}{40}\)
= \(\frac{60}{40}\)
= \(\frac{3}{2}\)
= 1\(\frac{1}{2}\)

Question 15.
32 × \(\frac{5}{8}\)
Answer:
20
Explanation:
32 × \(\frac{5}{8}\)
Multiply whole number by the numerator and then place over denominator.
= \(\frac{32}{1}\) × \(\frac{5}{8}\)
= \(\frac{32 X 5}{8}\)
= \(\frac{160}{8}\)
= 20

Question 16.
15 × –\(\frac{1}{15}\)
Answer:
-1
Explanation:
15 × –\(\frac{1}{15}\)
Multiply whole number by the numerator and then place over denominator.
= \(\frac{15}{1}\) × –\(\frac{1}{15}\)
= \(\frac{-15}{15}\)
= -1

Question 17.
16 × –\(\frac{3}{16}\)
Answer:
-3
Explanation:
16 × –\(\frac{3}{16}\)
Multiply whole number by the numerator and then place over denominator.
= \(\frac{16}{1}\) × –\(\frac{3}{16}\)
= \(\frac{16 X -3}{16}\)
= \(\frac{-48}{16}\)
= -3

Question 18.
3 × \(\frac{1}{3}\)
Answer:
1
Explanation:
3 × \(\frac{1}{3}\)
Multiply whole number by the numerator and then place over denominator.
= \(\frac{3}{1}\) ×\(\frac{1}{3}\)
= \(\frac{3}{3}\)
= 1

Question 19.
45 × \(\frac{13}{15}\)
Answer:
39
Explanation:
45 × \(\frac{13}{15}\)
Multiply whole number by the numerator and then place over denominator.
= \(\frac{45}{1}\) ×\(\frac{13}{15}\)
= \(\frac{45 X 13}{15}\)
= \(\frac{585}{15}\)
= 39

Question 20.
7 × \(\frac{4}{7}\)
Answer:
4
Explanation:
7 × \(\frac{4}{7}\)
Multiply whole number by the numerator and then place over denominator.
= \(\frac{7}{1}\) × \(\frac{4}{7}\)
= \(\frac{7 X 4}{7}\)
= \(\frac{28}{7}\)
= 4

Excel in your academics by accessing McGraw Hill Math Grade 7 Answer Key PDF Lesson 19.5 Temperature existing for free of cost.

McGraw-Hill Math Grade 7 Answer Key Lesson 19.5 Temperature

Exercises
CONVERT
° F = ° C × \(\frac{9}{5}\) + 32
° C = (° F – 32) × \(\frac{9}{5}\)

Question 1.
200° C = _______________ F
Answer:
200° C is equal to 392° F.

Explanation:
° F = ° C × \(\frac{9}{5}\) + 32
° F = 200 × \(\frac{9}{5}\) + 32
° F = 40 × \(\frac{9}{1}\) + 32
° F = 360 + 32
° F = 392.

Question 2.
132° F = _______________ C
Answer:
132° F is equal to 180° C.

Explanation:
° C = (° F – 32) × \(\frac{9}{5}\)
° C = (132 – 32) × \(\frac{9}{5}\)
° C = 100 × \(\frac{9}{5}\)
° C = 20 × \(\frac{9}{1}\)
° C = 180.

Question 3.
81° F = _______________ C
Answer:
81° F is equal to 88.2° C.
Explanation:
° C = (° F – 32) × \(\frac{9}{5}\)
° C = (81 – 32) × \(\frac{9}{5}\)
° C = 49 × \(\frac{9}{5}\)
° C = \(\frac{441}{5}\)
° C = 88.2.

Question 4.
32° C = _______________ F
Answer:
32° C is equal to 89.6° F.

Explanation:
° F = ° C × \(\frac{9}{5}\) + 32
° F = 32 × \(\frac{9}{5}\) + 32
° F = \(\frac{288}{5}\) + 32
° F = 57.6 + 32
° F = 89.6.

Question 5.
214° F = _______________ C
Answer:
214° F is equal to 327.6° C.

Explanation:
° C = (° F – 32) × \(\frac{9}{5}\)
° C = (214 – 32) × \(\frac{9}{5}\)
° C = 182 × \(\frac{9}{5}\)
° C = \(\frac{1638}{5}\)
° C = 327.6.

Question 6.
320° F = _______________ C
Answer:
320° F is equal to 518.4° C.

Explanation:
° C = (° F – 32) × \(\frac{9}{5}\)
° C = (320 – 32) × \(\frac{9}{5}\)
° C = 288 × \(\frac{9}{5}\)
° C = \(\frac{2592}{5}\)
° C = 518.4.

Question 7.
10°F = _______________ C
Answer:
10°F is equal to -39.6° C.

Explanation:
° C = (° F – 32) × \(\frac{9}{5}\)
° C = (10 – 32) × \(\frac{9}{5}\)
° C = -22 × \(\frac{9}{5}\)
° C = – \(\frac{198}{5}\)
° C = -39.6.

Question 8.
45° C = _______________ F
Answer:
45° C is equal to 113° F.

Explanation:
° F = ° C × \(\frac{9}{5}\) + 32
° F = 45 × \(\frac{9}{5}\) + 32
° F = 9 × \(\frac{9}{1}\) + 32
° F = 81 + 32
° F = 113.

Question 9.
75° F = _______________ C
Answer:
75° F is equal to 77.4° C.

Explanation:
° C = (° F – 32) × \(\frac{9}{5}\)
° C = (75 – 32) × \(\frac{9}{5}\)
° C = 43 × \(\frac{9}{5}\)
° C = \(\frac{387}{5}\)
° C = 77.4.

Question 10.
90° C = _______________ F
Answer:
90° C is equal to 64.4° F.

Explanation:
° F = ° C × \(\frac{9}{5}\) + 32
° F = 90 × \(\frac{9}{5}\) + 32
° F = 18 × \(\frac{9}{1}\) + 32
° F = \(\frac{162}{5}\) + 32
° F = 32.4 + 32
° F = 64.4.

Question 11.
-15° F = _______________ C
Answer:
-15° F is equal to – 84.6° C.

Explanation:
° C = (° F – 32) × \(\frac{9}{5}\)
° C = (-15 – 32) × \(\frac{9}{5}\)
° C = – 47 × \(\frac{9}{5}\)
° C = \(\frac{- 423}{5}\)
° C = – 84.6.

Question 12.
130° F = _______________ C
Answer:
130° F is equal to 176.4° C.

Explanation:
° C = (° F – 32) × \(\frac{9}{5}\)
° C = (130 – 32) × \(\frac{9}{5}\)
° C = 98 × \(\frac{9}{5}\)
° C = \(\frac{882}{5}\)
° C =176.4.

Question 13.
37° C = _______________ F
Answer:
37° C is equal to 69° F.

Explanation:
° F = ° C × \(\frac{9}{5}\) + 32
° F = 37 × \(\frac{9}{5}\) + 32
° F =  \(\frac{185}{5}\) + 32
° F = 37 + 32
° F = 69.

Question 14.
2000° C = _______________ F
Answer:
2000° C is equal to 3632° F.

Explanation:
° F = ° C × \(\frac{9}{5}\) + 32
° F = 2000 × \(\frac{9}{5}\) + 32
° F = 400 × \(\frac{9}{1}\) + 32
° F = 3,600 + 32
° F = 3632.

Question 15.
244° C = _______________ F
Answer:
244° C is equal to 471.2° F.

Explanation:
° F = ° C × \(\frac{9}{5}\) + 32
° F = 244 × \(\frac{9}{5}\) + 32
° F =  \(\frac{2196 }{5}\) + 32
° F = 439.2 + 32
° F = 471.2.

Question 16.
Sarah has a fever and is running a temperature of 39° C. What is her temperature in Fahrenheit?
Answer:
102.2 is her temperature in Fahrenheit.

Explanation:
Sarah has a fever and is running a temperature of 39° C.
Temperature of Sarah  = 39 ° C.
° F = ° C × \(\frac{9}{5}\) + 32
° F = 39 × \(\frac{9}{5}\) + 32
° F = \(\frac{351}{5}\) + 32
° F = 70.2 + 32
° F = 102.2.

Question 17.
Jared is baking cookies for a bake sale. His recipe calls for him to set the oven to a temperature of 350° F. If his oven only displays temperature in Celsius, then to what temperature should Jared set his oven?
Answer:
572.4 is the temperature should Jared set his oven.

Explanation:
Temperature of his recipe calls for him to set the oven = 350° F.
If his oven only displays temperature in Celsius,
Temperature should Jared set his oven =
° C = (° F – 32) × \(\frac{9}{5}\)
° C = (350 – 32) × \(\frac{9}{5}\)
° C = 318 × \(\frac{9}{5}\)
° C =  \(\frac{2862}{5}\)
° C = 572.4.