Envision Math 5th Grade Textbook Answer Key Topic 2.5 Adding Decimals

Adding Decimals

How can you add decimals?
What was the combined time for the first two legs of the relay race?
Envision Math Grade 5 Answers Topic 2.5 Adding Decimals 1
Choose an Operation Add to join groups.
Find 21.49 + 21.59.
Estimate: 21 + 22 = 43

Guided Practice*

Do you know HOW?
In 1 through 6, add the decimals.

Question 1.
0.82 + 4.21
Answer:

Question 2.
9.1 + 7.21
Answer:

Question 3.
9.7 + 0.24
Answer:

Question 4.
3.28 + 6.09
Answer:

Question 5.
0.26 + 8.3
Answer:

Question 6.
4.98 + 3.02
Answer:

Do you UNDERSTAND?

Question 7.
Reasonableness How do you know the total time for the first two legs of the race is reasonable?
Answer:

Question 8.
Writing to Explain How is finding $4.25 + $3.50 like finding 4.25 + 3.5? How is it different?
Answer:

Independent Practice

In 9 through 26, add the decimals.

Question 9.
Envision Math Grade 5 Answers Topic 2.5 Adding Decimals 20
Answer:

Question 10.
Envision Math Grade 5 Answers Topic 2.5 Adding Decimals 21
Answer:

Question 11.
Envision Math Grade 5 Answers Topic 2.5 Adding Decimals 22
Answer:

Question 12.
Envision Math Grade 5 Answers Topic 2.5 Adding Decimals 23
Answer:

Question 13.
Envision Math Grade 5 Answers Topic 2.5 Adding Decimals 24
Answer:

Question 14.
Envision Math Grade 5 Answers Topic 2.5 Adding Decimals 25
Answer:

Question 15.
Envision Math Grade 5 Answers Topic 2.5 Adding Decimals 26
Answer:

Question 16.
Envision Math Grade 5 Answers Topic 2.5 Adding Decimals 27
Answer:

Question 17.
Envision Math Grade 5 Answers Topic 2.5 Adding Decimals 28
Answer:

Question 18.
Envision Math Grade 5 Answers Topic 2.5 Adding Decimals 29
Answer:

Question 19.
Envision Math Grade 5 Answers Topic 2.5 Adding Decimals 30
Answer:

Question 20.
Envision Math Grade 5 Answers Topic 2.5 Adding Decimals 31
Answer:

Question 21.
$271.90 + $34.22 22.
Answer:

Question 22.
658.2 + 0
Answer:

Question 23.
0.922 + 6.4
Answer:

Question 24.
8.02 + 9.07
Answer:

Question 25.
13.9 + 0.16
Answer:

Question 26.
0.868 + 15.973
Answer:

Step 1

Write the numbers. Line up the decimal points.
Envision Math 5th Grade Answer Key Topic 2.5 Adding Decimals 30

Step 2

First, add the hundredths. Regroup if necessary
Envision Math 5th Grade Answer Key Topic 2.5 Adding Decimals 31

Step 3

Add the tenths, ones, and tens. The decimal point in the sum is aligned with the decimal point in the addends. Check the sum with your estimate.
Envision Math 5th Grade Answer Key Topic 2.5 Adding Decimals 31.1

The total time for the first two legs of the race was 43.08 seconds.

Problem Solving

Question 27.
A balloon mural of the Chicago skyline measures 17.6 m on two sides and 26.21 m on the other two sides. What is the perimeter of the mural?
A. 38.81 m
B. 48.21 m
C. 55.74 m
D. 87.62 m
Answer:

Question 28.
Writing to Explain Juan adds 3.8 ± 4.6 and gets a sum of 84. Is his answer correct? Tell how you know.
Answer:

Question 29.
Think About the process
Jamie earned $27 taking care of a neighbor’s dog for one week. She spent $19.95 on a new DVD. Later, she earned $15 for raking leaves. Which expression shows how to find the money Jamie has left?
A. $27 + $19.95 + $15
B. $19.95 – $15 + $27
C. $27 – $19.95 – $15
D. $27 – $19.95 – $15
Answer:

Question 30.
At a flower shop, Teri sees that roses are $3 each, carnations are $4 for 3 flowers, and tulips are $4 for 4 flowers. She buys 3 roses and
3 carnations. She has $20. How much change does Teri get back?

Question 31.
Which two cities had the greatest combined rainfall for the period given?
A. Caribou and Boise
B. Springfield and Macon
C. Macon and Boise
D. Caribou and Springfield
Envision Math 5th Grade Answer Key Topic 2.5 Adding Decimals 40
Answer:

Question 32.
What is the typical yearly rainfall for all four cities?
Answer:

Question 33.
Which location had less than 45 inches of rain but more than 40 inches of rain
Answer:

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