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:
