Unit 1-4 Review

Place Value

100

Find the product: 8 x 10⁴ 

80,000

200

Write in expanded form: 102,200

(1 x 100,000) + (2 x 1,000) + (2 x 100) 

or

(1 x 10⁵) + (2 x 10³) + (2 x 10²)

300

Write as a fraction: 0.007

7/1000

400

Write in standard form:

(2x1) + (6 x 1/1000)

2.006

500

Mr. Wimbley buys a bow tie for $8.68. He only brought single dollars to the store with him, how many dollar bills does he need to hand to the cashier?

9

Add and Subtract Decimals

100

6.9 + 2.8

9.7

200

8.7 + 4.3

13

300

16.62 + 4 + 2.38

23

400

20.34 - 8 - 3.25

9.09

500

Ms. Schmidt is at the watermelon store. She buys one watermelon for $17.78, another one for $56.74. She also finds mini watermelons on sale for $2.34. She buys two of them. How much money did she spend on watermelon?

$79.20

Multiply Whole Numbers

100

Find the product of 382 x 10⁴

3,820,000

200

Estimate the product of 44 x 212

10,000

300

18 x 360

6,480

400

475 x 64

30,400

500

Mrs. Angella goes to the farm and sees a field of cattle. The calves are on sale for $231. She decides to buy 28 of them. How much does she spend?

$6,468

Multiply Decimals by 10,100 and 1000

100

2.43 x 1

2.43

200

92.3 x 10²

9,230

300

0.018 x 100

1.8

400

56.7 x 10³

56,700

500

Mrs. Tsatsos is at the home and garden store looking for a few new garden shovels. The red garden shovels cost $3.42, the blue garden shovels cost $3.24. If she buys the 100 red garden shovels how much money does she spend in all?

$342

Multiply Decimals by 0.1,0.01 and 0.001

100

214.8 x 0.1

21.48

200

34.67 x 0.01

0.3467

300

7.77 x 0.001

0.00777

400

56.23 x 0.01

0.5623

500

Ms. Heinz buys 56.78 chocolate covered crickets. If the weight of each cricket is 0.001 grams what is the total weight of the crickets?

0.05678