Envision Math 4th Grade Textbook Answer Key Topic 2.7 Subtracting Whole Numbers

Subtracting Whole Numbers

How do you subtract numbers?
Brenda has a total of 221 songs in her computer. Her sister, Susan, has a total of 186 songs in her computer. How many more songs does Brenda have in her computer than Susan?

Choose an Operation Subtract to find how many more songs.
Envision Math Grade 4 Answers Topic 2.7 Subtracting Whole Numbers 1

Guided Practice*

Do You Know How?

In 1 through 4, subtract.

Question 1.
Envision Math Grade 4 Answers Topic 2.7 Subtracting Whole Numbers 1.1
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Question 2.
Envision Math Grade 4 Answers Topic 2.7 Subtracting Whole Numbers 2
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Question 3.
Envision Math Grade 4 Answers Topic 2.7 Subtracting Whole Numbers 3
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Question 4.
Envision Math Grade 4 Answers Topic 2.7 Subtracting Whole Numbers 4
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Do You Understand?

Question 5.
In the example at the top, why was the 0 in the hundreds place not written in the answer?
Answer:

Question 6.
Brenda would like to have 275 songs on her computer by next year. How many more songs does she need to download?

Independent Practice

In 7 through 26, subtract.

Question 7.
Envision Math Grade 4 Answers Topic 2.7 Subtracting Whole Numbers 5
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Question 8.
Envision Math Grade 4 Answers Topic 2.7 Subtracting Whole Numbers 6
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Question 9.
Envision Math Grade 4 Answers Topic 2.7 Subtracting Whole Numbers 7
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Question 10.
Envision Math Grade 4 Answers Topic 2.7 Subtracting Whole Numbers 8
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Question 11.
Envision Math Grade 4 Answers Topic 2.7 Subtracting Whole Numbers 9
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Question 12.
Envision Math Grade 4 Answers Topic 2.7 Subtracting Whole Numbers 10
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Question 13.
Envision Math Grade 4 Answers Topic 2.7 Subtracting Whole Numbers 11
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Question 14.
Envision Math Grade 4 Answers Topic 2.7 Subtracting Whole Numbers 12
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Question 15.
552 – 228
Answer:

Question 16.
3,711 – 1,683
Answer:

Question 17.
217 – 166
Answer:

Question 18.
562 – 199
Answer:

Question 19.
7,475 – 5,130
Answer:

Question 20.
5,831 – 1,156
Answer:

Question 21.
9,385 – 720
Answer:

Question 22.
1,111 – 589
Answer:

Question 23.
8,476 – 2,185
Answer:

Question 24.
6,251 – 964
Answer:

Question 25.
7,374 – 1,246
Answer:

Question 26.
8,327 – 3,796
Answer:

Step 1

Find 221 – 186.
Estimate: 220 – 190 = 30
Subtract the ones.
Envision Math Grade 4 Answers Topic 2.7 Subtracting Whole Numbers 13

Step 2

Subtract the tens.
Subtract the hundreds.
Envision Math Grade 4 Answers Topic 2.7 Subtracting Whole Numbers 14

Step 3

Operations that undo each other are inverse operations. Addition and subtraction have an inverse relationship.
The answer checks.
Envision Math Grade 4 Answers Topic 2.7 Subtracting Whole Numbers 15
The answer checks.

Problem Solving

Question 27.
A crayon company makes 17,491 green crayons and 15,063 red crayons. How many more green crayons are made than red crayons?
A. 3,463
B. 2,428
C. 10,456
D. 32,554
Answer:

Question 28.
Angela hiked a trail that climbed 526 feet. Raul hiked a trail that climbed 319 feet. How many more feet did Angela climb than Raul?
Envision Math Grade 4 Answers Topic 2.7 Subtracting Whole Numbers 16
Answer:

Question 29.
Jermaine and Linda collected aluminum cans for one month. Look at the chart below to see how many aluminum cans each
student collected.
a. Who collected more cans?
b. Find the difference between the number of cans collected.
Envision Math Grade 4 Answers Topic 2.7 Subtracting Whole Numbers 17
Answer:

Question 30.
Mount Kilimanjaro is a mountain in Africa. A group of mountain climbers begin their descent from the peak. On Monday, the mountain climbers descended 3,499 feet. On Tuesday, they descended another 5,262 feet. How many feet have the mountain climbers descended?
Envision Math Grade 4 Answers Topic 2.7 Subtracting Whole Numbers 50
Answer:

Question 31.
Mike’s team scored 63 points in the first half of a basketball game. His team won the game by a score of 124 to103. How many points did his team score in the second half?
Answer:

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