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

Question 2.
27,961

Question 3.
321,209

Question 4.
3,454

Question 5.
6,792,365

Question 6.
15,164,612

Question 7.
413,109,657

Question 8.
83,251

Question 9.
4,806

Question 10.
6,138,405

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

Question 2.
23,901 23,899

Question 3.
42,661,907 42,659,824

Question 4.
735,291,000 735,291,001

Question 5.
6,103,582 6,130,449

Question 6.
462,918 461,349

Question 7.
8,457 8,451

Question 8.
163,492,708 163,492,807

Question 9.
38,605 38,650

Question 10.
871,943 871,934

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

Question 2.
2,002 2,020

Question 3.
3,600 3,006

Question 4.
7,004 7,040

Order the numbers from greatest to least.

Question 5.
1,009 1,900 1,090

Question 6.
6,008 6,800 6,080

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.