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

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

Exercises Estimate

Question 1.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 1
Answer:
$34.45 + $22.52 = $56.97.

Explanation:
The addition of the decimals is $34.45 and $22.52 is $56.97.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 1-1

Question 2.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 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.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 3
Answer:

Explanation:
The addition of the decimals $76.77+$2.31 is $78.08.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 3-1

Question 4.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 4
Answer:
$908.03-$37.56 = $870.47.

Explanation:
The subtraction of the decimals $908.03-$37.56 is $870.47.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 4-1

Question 5.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 5
Answer:
$32.77-$21.99 = $10.78.

Explanation:
The subtraction of the decimals $32.77-$21.99 is $10.78.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 5-1

Question 6.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 6
Answer:
$561.22-$2.10 = $559.12.

Explanation:
The subtraction of the decimals $561.22-$2.10 is $559.12.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 6-1

Question 7.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 7
Answer:
$77.55-$55.77 = $21.78.

Explanation:
The subtraction of the decimals $77.55-$55.77 is $21.78.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 7-1

Question 8.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 8
Answer:
$234.55-$222.99 = $011.56.

Explanation:
The subtraction of the decimals $234.55-$222.99 is $011.56.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 8-1

Question 9.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 9
Answer:
$45.32 + $99.01 = $144.33.

Explanation:
The addition of the decimals $45.32 and $99.01 which is $144.33.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 9-1

Question 10.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 10
Answer:
$10.08-$1.07 = $09.01.

Explanation:
The subtraction of the decimals $10.08-$1.07 is $09.01.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 10-1

Question 11.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 11
Answer:
$12.77 + $2.39 = $15.16.

Explanation:
The addition of the decimals $12.77 and $2.39 is $15.16.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 11-1

Question 12.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 12
Answer:
$14.57 + $217.66 = $232.23.

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

Question 13.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 13
Answer:
$21.67-$18.33 = $03.34.

Explanation:
The subtraction of the decimals $21.67-$18.33 is $03.34.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 13-1

Question 14.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 14
Answer:
$2.33-$1.87 = $0.46.

Explanation:
The subtraction of the decimals $2.33-$1.87 is $0.46.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 14-1

Question 15.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 15
Answer:
$444.71 + $67.33 = $512.04.

Explanation:
The addition of the decimals $444.71 and $67.33 is $512.04.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 15-1

Question 16.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 16
Answer:
$232.47 + $1001.51 = $1233.98.

Explanation:
The addition of the decimals $232.47 and $1001.51 is $1233.98.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 16-1

Question 17.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 17
Answer:
$67.89 + $253.77 = $321.66.

Explanation:
The addition of the decimals $67.89 and $253.77 is $321.66.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 17-1

Question 18.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 18
Answer:
$7.52 + $75.20 = $82.72

Explanation:
The addition of the decimals $7.52 and $75.20 is $82.72.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 18-1

Question 19.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 19
Answer:
$2303.41 + $223.67 = $2527.08.

Explanation:
The addition of the decimals $2303.41 and $223.67 is $2527.08.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 19-1

Question 20.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 20
Answer:
$32.6 – $21.91 = $10.65.

Explanation:
The subtraction of the decimals $32.6 – $21.91 which is $10.65.
McGraw Hill Math Grade 7 Chapter 10 Lesson 10.4 Answer Key Estimating Decimal Sums and Differences 2-1

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