Common Denominators

Find the LCD of...

100

1/6 and 2/3

6

200

3/4 and 3/5

20

300

1/10 and 1/2

10

400

7/9 and 5/6

18

500

8/11 and 4/7

77

LCD problems #2

100

Find the LCD for:

1  1/8 + 2  3/4

8

200

Find the LCD for:

3  1/3 + 1  4/7

21

300

Find the LCD for:

9  1/6 + 2  1/4

12

400

Find the LCD for:

3  1/5 + 1  8/9

45

500

Find the LCD for:

4  2/12 + 6  1/20

60

Multiples

100

What is the eighth multiple of 8?

64

200

What is the seventh multiple of 9?

63

300

What is the twelfth multiple of 4?

48

400

What is the sixth multiple of 8?

48

500

What is the third multiple of 14?

42

LCD problems #3

100

1/2 and 1/3

6

200

1/3 and 1/8

24

300

4/9 and 3/4

36

400

5/6 and 3/8

24

500

5/12 and 2/5

60