Cumulative Review

Topic 1- Place Value

100

What is 8 x 10^4?

80,000

200

Write this number in expanded form: 85,000,011. 

(8 x 10,000,000) + (5 x 1,000,000) + (1 x 10) + (1 x 10⁰)

300

What are two equivalent decimals that are equal to 3.7?

3.70, 3.700

400

Round 34.731 to the nearest tenth.

34.7

500

How can you write 0.044 as a fraction?

44/1,000

Topic 2- Adding and Subtracting Decimals

100

Use mental math to solve: 19.5 + 24 + 7.5

51

200

Estimate the difference of 19.7 - 6.9

13

300

What is 45.08 + 2.01?

47.09

400

What is 7.28 - 4.9?

2.38

500

What are two strategies that can be used for estimation?

rounding and compatible numbers

Topic 3- Multiplying Whole Numbers

100

What is 382 x 10,000?

3,820,000

200

Estimate the product of 19 and 718.

14,000

300

What is 405 x 70?

28,350

400

What is 125 x 15?

1,875

500

Each elephant at the zoo eats 125 pounds of food per day. How many pounds of food will 18 elephants eat?

2,250 pounds

Topic 4- Multiplying Decimals

100

What is 37.96 x 0.01?

0.3796

200

What is 843.5 x 10²?

84,350

300

Estimate the product of 0.13 and 11.

1

400

What is 50 x 0.914?

45.7

500

Use number sense to decide where to place the decimal in the product:

5.01 x 3 = 1503

15.03

Topic 5- Dividing Whole Numbers

100

What is 6,300/90?

70

200

Estimate 7,260/83 using compatible numbers.

90

300

What is 304/16?

19

400

What is 648/24?

27

500

What is 375/40?

9 R 15