Pre-Algebra

GCF

100

Find the GCF of 24 and 32

8

200

Find the GCF of 15x² and 20x⁵

5x²

300

Find the GCF of 30 and 27

3

400

Find the GCF of 100 and 75

25

500

Find the GCF of 12, 16, and 24

4

LCM

100

Find the LCM of 4 and 10

20

200

Find the LCM of 8 and 12

24

300

Find the LCM of 15 and 20

60

400

Find the LCM of 27 and 21

189

500

Find the LCM of 12, 14, and 9

252

Adding/Subtracting Fractions

100

Add  1/6+5/6 

1

200

Add 1/3+2/5 

11/15

300

Subtract 7/10-1/5 

1/2

400

Subtract 9/30-1/10 

1/5

500

Add 1/3+1/4+1/6 

3/4

Multiplying/Dividing Fractions

100

Multiply 1/3*6/7 

2/7

200

Multiply  2/9*3/4 

1/6

300

Divide  5/9div10 

1/18

400

Divide  7/10div21/40 

4/3

500

Divide  15/21div20/21 

3/4

Fractions, Decimals, and Percents

100

Write  7/25 as a percent.

28%

200

Write 0.08 as a percent.

8%

300

Write 70% as a fraction in simplest form.

7/10

400

Write  8/25  as a decimal.

0.32

500

Write 7.5% as a decimal.

0.075