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

Essential Question

How can I use place value and properties to add and subtract decimals?
1. First, line up the decimal points vertically.
2. Fill in any 0’s wherever it is necessary.
3. Add or subtract the numbers as if the given numbers are whole numbers.
4. Place the decimal point in the sum or difference with the numbers being added or subtracted.

Name the place-value position of each underlined digit.

Question 1.
52 ______________
5 tens.

Explanation:
The place-value position of the underlined digit is 5 tens.

Question 2.
138 ______________
8 ones.

Explanation:
The place-value position of the underlined digit is 8 ones.

Question 3.
4.3 ______________
3 ones.

Explanation:
The place-value position of the underlined digit is 5 ones.

Question 4.
901 ______________
9 Hundred.

Explanation:
The place-value position of the underlined digit is 9 hundreds.

Question 5.
1.216 _______________
1 Tens.

Explanation:
The place-value position of the underlined digit is 1 Tens.

Question 6.
2,785 _______________
2 Thousands.

Explanation:
The place-value position of the underlined digit is 2 Thousands.

Round each number to the underlined place.

Question 7.
19 = ____________
1 Tens.

Explanation:
The place-value position of the underlined digit is 1 tens.

Question 8.
681 = ______________
8 Thousands.

Explanation:
The place-value position of the underlined digit is 5 Thousands.

Question 9.
735 = _______________
7 Thousands.

Explanation:
The place-value position of the underlined digit is 5 ones.

Question 10.
3,705 = _______________
3 Thousands

Explanation:
The place-value position of the underlined digit is 3 Thousands.

Question 11.
106,950 = _________________
6 Thousands.

Explanation:
The place-value position of the underlined digit is 6 Thousands.

Question 12.
5,750 = ________________
7 Hundreds.

Explanation:
The place-value position of the underlined digit is 7 Hundreds.

Question 13.
38 + 16 = ______________
54

Explanation:
The addition of the given two numbers is 54.

Question 14.
151 + 218 = ______________
369

Explanation:
The addition of the given two numbers is 369.

Question 15.
260 + 398 = _____________
658

Explanation:
The addition of the given two numbers is 658.

Question 16.
235 + 68 = ______________
303

Explanation:
The addition of the given two numbers is 303.

Question 17.
The Pham family and the Weber family have many pets. How many more pets does the Pham family have than the Weber family? The Pham family has 4 more pets than the Weber family.

Explanation:
Given,
The Pham family has 3 dogs, 1 cat, and 6 fish
Total no of pets Pham family has = 3 + 1 + 6 = 10
The weber family has 2 dogs, 3 gerbils, and 1 turtle
Total no of pets weber family has = 2 + 3 + 1 = 6
10 – 6 = 4
Therefore the Pham family has 4 more pets than the Weber family.

How Did I Do?  My Math Words

Review Vocabulary

greater than (>)
less than (<) equal to (=) Making Connections Compare the numbers in each row. Use the review vocabulary to compare the two numbers in each row using >, <, or =. Describe how you used place value to complete the chart.
Given,
The number is 57.2 and 57.02
Now compare the given numbers
Check the place values
2 ones > 0 ones
57.2 > 57.02
Numbers are 12.01 and 12.1
Now compare the numbers
0 ones < 1 ones
Numbers are 12.6 and 12.60
6 ones is equal to 6 ones
6 = 6
12.6 = 12.60
Numbers are 24.56 and 24.5
Now compare the numbers
6 ones > 0 ones
24.56 > 24.5
Given Numbers are 6.99 and 6.89
9 > 8
6.99 > 6.89

Explanation: My Vocabulary Cards  Ideas for Use

• Write a tally mark on each card every time you read the word in this chapter or use it in your writing. Challenge yourself to use at least 10 tally marks for each card.
• Use the blank cards to write your own vocabulary cards.

The order in which numbers are added does not change the sum.
Commutative means “something that involves substitution.” How does this definition relate to the Commutative Property?

Explanation:
The related to the Commutative Property is called Commutative Property of addition.

The way in which numbers are grouped does not change the sum.
Compare the example on this card with the example on the Commutative Property card. What differences do you notice?
It is called associative property of addition.

Explanation:
The way in which numbers are grouped does not change the sum is called associative property of addition. The commutative property means that a+b is the same as b+a. The associative property means that (a+b)+c is the same as (a+c)+b.

Operations that undo each other.
What are the inverse operations for addition and division?
Inverse operations are opposite operations.
The division is the inverse of multiplication and subtraction is the inverse of addition and

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

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