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McGraw-Hill Math Grade 7 Answer Key Lesson 9.1 Place Value and Rounding
Exercises Round
Round to the nearest whole number.
Question 1.
14.37
Answer:
14
Explanation:
Observe the digit in the tenth place which is less than 5,
Round to the whole number given.
So, 14.37 is round to the nearest whole number as 14.
Question 2.
77.4
Answer:
77
Explanation:
Observe the digit in the tenth place which is less than 5,
Round to the whole number given.
So, 77.4 is round to the nearest whole number as 77.
Question 3.
145.6
Answer:
146
Explanation:
Observe the digit in the tenth place which is greater than 5,
Add one to the given whole number.
So, 145.6 is round to the nearest whole number as 146.
Question 4.
1000.9
Answer:
1001
Explanation:
Observe the digit in the tenth place which is greater than 5,
Add one to the given whole number.
So, 1000.9 is round to the nearest whole number as 1001.
Question 5.
89.4
Answer:
89
Explanation:
Observe the digit in the tenth place which is less than 5,
Round to the whole number given.
So, 89.4 is round to the nearest whole number as 89.
Question 6.
1501.1
Answer:
1501
Explanation:
Observe the digit in the tenth place which is less than 5,
Round to the whole number given.
So, 1501.1 is round to the nearest whole number as 1501.
Round to the nearest tenth.
Question 7.
14.37
Answer:
14.4
Explanation:
Observe the digit to the right of the rounding place,
if the digit is greater than 5 add 1 to the digit in the rounding place.
So, 14.37 is round to the nearest tenth place is 14.4
Question 8.
125.51
Answer:
125.5
Explanation:
Observe the digit to the right of the rounding place,
if the digit is less than 5 keep the digit in the rounding place.
So, 125 is round to the nearest tenth as 125.51.
Question 9.
149.49
Answer:
149.5
Explanation:
Observe the digit to the right of the rounding place,
if the digit is greater than 5 add 1 to the digit in the rounding place.
So, 149.49 is round to the nearest tenth as 149.5.
Question 10.
33.35
Answer:
33.4
Explanation:
Observe the digit to the right of the rounding place,
if the digit is greater than 5 add 1 to the digit in the rounding place.
So, 33.35 is round to the nearest tenth as 33.4.
Question 11.
275.77
Answer:
275.8
Explanation:
Observe the digit to the right of the rounding place,
if the digit is greater than 5 add 1 to the digit in the rounding place.
So, 275.77 is round to the nearest tenth as 275.8.
Question 12.
212.99
Answer:
213
Explanation:
Observe the digit to the right of the rounding place,
if the digit is greater than 5 add 1 to the digit in the rounding place.
So, 212.99 is round to the nearest tenth as 213.
Round to the nearest hundredth.
Question 13.
1435.344
Answer:
1435.34
Explanation:
Observe the digit to the right of the rounding place,
if the digit is less than 5 keep the digit in the rounding place.
So, 1435.344 is round to the nearest hundredth as 1435.34.
Question 14.
3.555
Answer:
3.56
Explanation:
Observe the digit to the right of the rounding place,
if the digit is greater than 5 add 1 to the digit in the rounding place.
So, 3.555 is round to the nearest hundredth as 3.56.
Question 15.
111.119
Answer:
111.12
Explanation:
Observe the digit to the right of the rounding place,
if the digit is greater than 5 add 1 to the digit in the rounding place.
So, 111.119 is round to the nearest hundredth as 111.12.
Question 16.
32.756
Answer:
32.76
Explanation:
Observe the digit to the right of the rounding place,
if the digit is greater than 5 add 1 to the digit in the rounding place.
So, 32.756 is round to the nearest hundredth as 32.76.
Question 17.
999.989
Answer:
999.99
Explanation:
Observe the digit to the right of the rounding place,
if the digit is greater than 5 add 1 to the digit in the rounding place.
So, 999.989 is round to the nearest hundredth as 999.99.
Question 18.
954.376
Answer:
954.38
Explanation:
Observe the digit to the right of the rounding place,
if the digit is greater than 5 add 1 to the digit in the rounding place.
So, 954.376 is round to the nearest hundredth as 954.38.
Round to the nearest thousandth.
Question 19.
3.2378
Answer:
3.238
Explanation:
Observe the digit to the right of the rounding place,
if the digit is greater than 5 add 1 to the digit in the rounding place.
So, 3.2378 is round to the nearest thousandth as 3.238.
Question 20.
329.3297
Answer:
329.330
Explanation:
Observe the digit to the right of the rounding place,
if the digit is greater than 5 add 1 to the digit in the rounding place.
So, 329.3297 is round to the nearest thousandth as 329.330.
Question 21.
109.1090
Answer:
109.109
Explanation:
Observe the digit to the right of the rounding place,
if the digit is less than 5 keep to the digit in the rounding place.
So, 109.1090 is round to the nearest thousandth as 109.109.
Question 22.
8256.7835
Answer:
8256.784
Explanation:
Observe the digit to the right of the rounding place,
if the digit is greater than 5 add 1 to the digit in the rounding place.
So, 8256.7835 is round to the nearest thousandth as 8256.784.
Question 23.
49.4949
Answer:
49.495
Explanation:
Observe the digit to the right of the rounding place,
if the digit is greater than 5 add 1 to the digit in the rounding place.
So, 49.4949 is round to the nearest thousandth as 49.495.
Question 24.
0.1138
Answer:
0.114
Explanation:
Observe the digit to the right of the rounding place,
if the digit is greater than 5 add 1 to the digit in the rounding place.
So, 0.114 is round to the nearest thousandth as 0.114.