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.
McGraw-Hill My Math Grade 5 Answer Key Chapter 5 Add and Subtract Decimals
Essential Question
How can I use place value and properties to add and subtract decimals?
Answer:
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.
Am I Ready
Name the place-value position of each underlined digit.
Question 1.
52 ______________
Answer:
5 tens.
Explanation:
The place-value position of the underlined digit is 5 tens.
Question 2.
138 ______________
Answer:
8 ones.
Explanation:
The place-value position of the underlined digit is 8 ones.
Question 3.
4.3 ______________
Answer:
3 ones.
Explanation:
The place-value position of the underlined digit is 5 ones.
Question 4.
901 ______________
Answer:
9 Hundred.
Explanation:
The place-value position of the underlined digit is 9 hundreds.
Question 5.
1.216 _______________
Answer:
1 Tens.
Explanation:
The place-value position of the underlined digit is 1 Tens.
Question 6.
2,785 _______________
Answer:
2 Thousands.
Explanation:
The place-value position of the underlined digit is 2 Thousands.
Round each number to the underlined place.
Question 7.
19 = ____________
Answer:
1 Tens.
Explanation:
The place-value position of the underlined digit is 1 tens.
Question 8.
681 = ______________
Answer:
8 Thousands.
Explanation:
The place-value position of the underlined digit is 5 Thousands.
Question 9.
735 = _______________
Answer:
7 Thousands.
Explanation:
The place-value position of the underlined digit is 5 ones.
Question 10.
3,705 = _______________
Answer:
3 Thousands
Explanation:
The place-value position of the underlined digit is 3 Thousands.
Question 11.
106,950 = _________________
Answer:
6 Thousands.
Explanation:
The place-value position of the underlined digit is 6 Thousands.
Question 12.
5,750 = ________________
Answer:
7 Hundreds.
Explanation:
The place-value position of the underlined digit is 7 Hundreds.
Add.
Question 13.
38 + 16 = ______________
Answer:
54
Explanation:
The addition of the given two numbers is 54.
Question 14.
151 + 218 = ______________
Answer:
369
Explanation:
The addition of the given two numbers is 369.
Question 15.
260 + 398 = _____________
Answer:
658
Explanation:
The addition of the given two numbers is 658.
Question 16.
235 + 68 = ______________
Answer:
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?
Answer:
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?
Shade the boxes to show the problems you answered correctly.
Answer:
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.
Answer:
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?
Answer:
Commutative Property of addition.
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?
Answer:
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?
Answer:
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.
Explain how one of the three properties in this chapter can help you add mentally.
Answer:
Identity property
My Foldable
Follow the steps on the back to make your Foldable.
Answer:
Explanation:
Given,
The numbers are 1.29 and 1.55.
Now add both numbers = 1.29 + 1.55 = 2.84
Estimate the numbers.
1.29 = 1 and 1.55 = 2
add = 1 + 2 = 3
Check for Reasonableness
2.84 ≈ 3