Least Common Denominator/Greatest Common Factor

Find the LCD

100

Find the LCD for 1/2 and 1/4

4

200

What is the LCD for 1/6 and 2/3?

6

300

What is the LCD for 3/4 and 3/5?

20

400

Add and simplify: 7/9 + 2/6

20/18

500

Subtract and simplify: 8/11 - 4/7

12/77

Find the GCF

100

Find the GCF for 1/2 and 5/4

2

200

Find the GCF for 1/6 and 2/3

3

300

Find the GCF for 3/4 and 3/5

8

400

Multiply and Simplify: 5/12 x 3/24

5/96

500

Divide and simplify:  25/8 ÷ 5/24

15

Mix It Up

100

1/4 + 2/4

3/4

200

7/15 + 5/15 - 11/15 = 

1/15

300

(2/3 x 2/5) - (2/3 x 1/10) = 

Write in simplest form!

1/5

400

List the first five multiples for 16

16, 32, 48, 64, 80

500

Pat needed more brushes.  Pat knew that the Paint Spot was 7/10 of a kilometer away.  Sandy said, "People's Paint Store is 3/10 of a kilometer closer."  How far away was People's Paint Store?

4/10 km