Math Review

Powers of 10

100

10²

100

200

4 x 10³

4,000

300

5 ÷ 10³

0.005

400

12.3 x 10²

1,230

500

15.65 ÷ 10³

.01565

PEMDAS

100

2 + 10 x 5

52

200

7 x 10 + (15 - 4) 

81

300

8 x 4 ÷ 8

4

400

7 x 10 + (15 - 4)

81

500

10² - (10 x 2)

80

Place Value

100

What number is in the tenths place? 10.132

1

200

What number is in the hundredths place? 123.789

8

300

What number would be in the tenths place after 15.167 is multiplied by 10?

6

400

What number would be in the thousandths place if 1.7639 is multiplied by 10?

9

500

What number would be in the hundredths place after 154.86 is divided by 10²?

4

Decimals

100

1.3 + 1.64

2.94

200

2.7 - 1.8

0.9

300

9 x 0.7

6.3

400

2.8 ÷ 7

0.4

500

4.2 ÷ 0.7

6

Fractions

100

3/8 + 4/8

7/8

200

5/7 - 2/3

1/21

300

1/2 x 4/5

2/5

400

1/3 ÷ 5

1/15

500

2/3 ÷ 4

1/6