## Envision Math 4th Grade Textbook Answer Key Topic 1 Reteaching

**Set A, pages 4-6,8-9**

Use a place-value chart to write the expanded Remember that periods can help form and word form of 26,500.

Expanded form: 20,000 + 6,000 + 500

Word form: twenty-six thousand, five hundred

Remember that periods can help you read large numbers. Use place-value charts to write each number in expanded form and word form.

Question 1.

7,549

Answer:

Question 2.

27,961

Answer:

Question 3.

321,209

Answer:

Question 4.

3,454

Answer:

Question 5.

6,792,365

Answer:

Question 6.

15,164,612

Answer:

Question 7.

413,109,657

Answer:

Question 8.

83,251

Answer:

Question 9.

4,806

Answer:

Question 10.

6,138,405

Answer:

**Set B, pages 10–13**

Write > or < for each .

45,423 44,897

Step 1

Use place value to compare.

Step 2

Start comparing from the left.

Step 3

Look for the first digit that is different.

45,423

44,897

5 > 4

So, 45,423 > 44,897.

Remember that a number line can be used to compare numbers. Write > or < for each .

Question 1.

11,961 12,961

Answer:

Question 2.

23,901 23,899

Answer:

Question 3.

42,661,907 42,659,824

Answer:

Question 4.

735,291,000 735,291,001

Answer:

Question 5.

6,103,582 6,130,449

Answer:

Question 6.

462,918 461,349

Answer:

Question 7.

8,457 8,451

Answer:

Question 8.

163,492,708 163,492,807

Answer:

Question 9.

38,605 38,650

Answer:

Question 10.

871,943 871,934

Answer:

**Set C, pages 14-15 **

Use expanded form to compare and order numbers. Which is greater, 3,500 or 3,005? 3,500 = 3,000 + 500 3,005 = 3,000 + 5 500 > 5

So, 3,500 > 3,005.

Write the numbers from greatest to least.

3,050 3,005 3,500

Write the numbers in expanded form.

3,050 = 3,000 + 50

3,005 = 3,000 + 5

3,500 = 3,000 + 500

500 > 50 > 5

So, 3,500 > 3,050 > 3,005.

Remember to use a place-value chart to help compare and order numbers.

Write each number in expanded form. Then, copy and complete by writing > or < for each .

Question 1.

8,500 8,005

Answer:

Question 2.

2,002 2,020

Answer:

Question 3.

3,600 3,006

Answer:

Question 4.

7,004 7,040

Answer:

Order the numbers from greatest to least.

Question 5.

1,009 1,900 1,090

Answer:

Question 6.

6,008 6,800 6,080

Answer:

**Set D, pages 16-17**

Using only hundreds and tens blocks, how many ways can you make 440?

Record the combinations using an organized list.

Remember that the way you organize a list can help you find all the possibilities in a problem.

Solve. Make an organized list to help you.

Question 1.

A game has yellow, red, black, and green counters. How many 2-color combinations can you make?

Answer:

Question 2.

Troy collects plastic banks. He has three different plastic banks: a pig, a cow, and a frog. How many ways can he arrange his banks on a shelf?

Answer: