Math Unit 4 review

Powers of ten

100

5 x 10¹

What is 50?

200

3 x 10²

What is 300?

300

18 x 10²

What is 1,800? 

400

108 x 10²

What is 10,800? 

500

523 X 10⁴

What is 5,230,000

Multiplication with zeros

100

40 x 2

What is 80? 

200

800 x 2 

What is 1600? 

300

80 x 600

What is 48,000? 

400

Every month Josh makes $40 for walking his neighbors dog after school. How much does he earn in 1 year? 

What is $480? 

500

An elephant eats about 2,500 pounds of food in 10 days. How much would he eat in 1,000 days? 

What is 250,000 pounds of food? 

Multiplication

100

42 x 5 

What is 210? 

200

37 x 9 

What is 333? 

300

24 x 15 

What is 360? 

400

54 x 75 

What is 4,050? 

500

49 x 76 

What is 3,724? 

Multiplying decimals

100

.08 x 6

What is .48? 

200

0.3 x 40

What is 12.0 or 12? 

300

1.03 x 15

What is 15.45? 

400

7.21 x 0.3

What is 2.163? 

500

246.1 x 0.09

What is 22.149

odds and ends

100

Compare: Greater than, less than, or equal to. 

.07   ____     0.71 

What is less than?  <

200

The  first 4  multiples for the number 30.

What is 30 ,60, 90, 120? 

300

Compare: Greater than, less than, or equal to. 

1.987   _____  1.897

What is greater than? >

400

All the factors for the number 48.

What are 1, 2, 3, 4, 6, 8, 16, 12, 24, 48?

500

What number are these all the multiples of? 

20, 32, 28, 16, 12, 4, 8, 40, 36, 44, 48 

What is 4 ?