All the solutions provided in **McGraw Hill My Math Grade 5 Answer Key PDF Chapter 5 Review **will give you a clear idea of the concepts.

## McGraw-Hill My Math Grade 5 Chapter 5 Review Answer Key

**Vocabulary Check**

**Use the words in the words bank to complete each sentence.**

Associative Property

Commutative Property

Identity Property

inverse operations

estimate

difference

exact answer

place value

regroup

Question 1.

The _______________ states that you can add numbers in any orders.

Answer:

Commutative Property

Explanation:

The Commutative Property states that you can add numbers in any order.

Question 2.

When you round a number, you find its _________________.

Answer:

Estimate

Explanation:

When you round a number, you find its Estimate.

Question 3.

The value given to a digit by its position in a number is its ________________.

Answer:

Place value.

Explanation:

The value given to a digit by its position in a number is its place value.

Question 4.

To ______________ is to form into a new or restructured group or grouping.

Answer:

Regroup.

Explanation:

To regroup is to form into a new or restructured group or grouping.

Question 5.

Subtracting results in finding the ___________________ between two numbers.

Answer:

Difference.

Explanation:

Subtracting results in finding the difference between two numbers.

Question 6.

The _____________ states that the sum of any number and 0 equals the number.

Answer:

Identity property.

Explanation:

The Identity property states that the sum of any number and 0 equals the number.

Question 7.

The _____________ states that the way in which numbers are grouped does not change the sum or product.

Answer:

Associative Property.

Explanation:

The Associative Property states that the way in which numbers are grouped does not change the sum or product.

Question 8.

When computing using actual numbers, you find a(n) ______________.

Answer:

Exact answer.

Explanation:

When computing using actual numbers, you find a(n) exact answer.

**Concept Check**

**Round each decimal to the place indicated.**

Question 9.

0.781; hundredths _______________

Answer:

0.78

Explanation:

By rounding off the decimal number to the place indicated is 0.78.

Question 10.

17.93; ones _________________

Answer:

18

Explanation:

By rounding off the decimal number to the place indicated is 18.

**Round each decimal to the nearest tenth. Then add or subtract.**

Question 11.

17.16 – 9.01 = ______________

Answer:

8.2

Explanation:

Given,

17.16 – 9.01

Now round off each decimal to the nearest tenth.

17.2 – 9 = 8.2

Question 12.

62.84 + 74.2 = _______________

Answer:

137

Explanation:

Given,

62.84 + 74.2

Now round off each decimal to the nearest tenth.

63 + 74 = 137.

**Add.**

Question 13.

Answer:

7.41

Explanation:

Question 14.

Answer:

$5.95

Explanation:

Question 15.

4.15 + 20.68 = _______________

Answer:

24.83

Explanation:

The addition of the given two decimal numbers is 24.83.

Question 16.

Use properties of addition to find 37 + 48 mentally. Show your steps and identify the properties that you used.

37 + 48 = ______________

Answer:

85

Explanation:

37 + 48 = (30 + 7) + (40 + 8)

= 30 + 40 + 7 + 8 Commutative property

= (30 + 40) + (7 + 8) Associative property

= 70 + 15 Add

= 85 Add

**Subtract. Use addition to check your answer.**

Question 17.

Answer:

2.86

Explanation:

The subtraction for the given decimal numbers is 2.86.

Question 18.

Answer:

$8.37

Explanation:

The subtraction for the given decimal numbers is $8.37.

Question 19.

8.3 – 4.7 = _______________

Answer:

3.6

Explanation:

The subtraction for the given decimal numbers is 3.6.

**Problem Solving**

**For Exercises 20 and 21, determine whether you need an estimate or an exact answer. Then solve.**

Question 20.

A family is staying in a hotel for 2 nights. The hotel costs $91.35 a night. About how much will they pay for the hotel?

Answer:

$91 + $91 = $182.

Explanation:

Given,

Cost of hotel = $91.35 a night.

The family is staying in a hotel for 2 nights.

$91 +$91 = $182

They will pay $182 for the hotel.

Question 21.

Jesse had three long jumps during a track meet of 17 feet, 18 feet, and 15 feet. Andrew had three long jumps during a track meet of 17 feet, 15 feet, and 18 feet. Overall, who had a greater total jump distance? Which addition property can you use to find the answer?

Answer:

Commutative property.

Explanation:

The jump distances were equal. So the addition property used to find the answer is called the Commutative property.

Question 22.

You have to be 48 inches tall to ride the roller coaster. Eva is 45 inches tall. If she grows 2 inches each year, will she be able to ride the roller coaster in 2 years?

Answer:

45 + 2 + 2 = 49 inches.

Explanation:

Given,

Eva is 45 inches tall.

If she grows 2 inches each year.

To find: will she be able to ride the roller coaster in 2 years?

45 + 2 + 2 = 49 inches.

**Test Practice**

Question 23.

Micah had $10.52 after he left the book store. If he bought a book for $6.39, how much money did he have before he went to the book store?

(A) $4.13

(B) $8.23

(C) $14.91

(D) $16.91

Answer:

$16.91

Explanation:

Given,

Micah had $10.52.

If he bought a book for $6.39

Total amount = $10.52 + $6.39 = $16.91.

**Reflect**

Use what you learned about adding and subtracting decimals to complete the graphic organizer.

Now reflect on the ESSENTIAL QUESTION? Write your answer below.

Answer:

The first line up the decimals points vertically. Fill in any zeros if necessary.

We have to add or subtract the numbers as if they are whole numbers.

Place the decimal value in the sum or difference so that they are lined up vertically with the given numbers being added or subtracted.

Explanation: