Lowest Common Denominator

Adding

100

What is the lowest common denominator?

1/2+1/3

What is 6?

200

What is the lowest common denominator?

2/6 + 1/5

What is 30?

300

What is the lowest common denominator?

2/7 + 3/8

What is 56?

400

What is the lowest common denominator?

3/10 + 2/11

What is 110?

500

What is the lowest common denominator?

11/12 + 10/11

What is 132?

Subtracting

100

What is the lowest common denominator?

4/5 - 1/4

What is 20?

200

What is the lowest common denominator?

8/9 - 2/3

What is 9?

300

What is the lowest common denominator?

8/9 - 2/7

What is 63?

400

What is the lowest common denominator?

31/32 - 5/8

What is 32?

500

What is the lowest common denominator?

9/10 - 2/15

What is 30?

Three Fractions

100

What is the lowest common denominator?

1/3 + 1/4 + 1/5

What is 60?

200

What is the lowest common denominator?

2/7 + 1/3 + 1/6

What is 42?

300

What is the lowest common denominator?

8/11 + 1/2 + 3/22

What is 22?

400

What is the lowest common denominator?

1/8 + 3/16 + 3/64

What is 64?

500

What is the lowest common denominator?

2/15 + 3/10 + 21/60

What is 60?

Simplified...

100

What is the denominator of this fraction in simplest form?

30/32

What is 16?

15/16

200

What is the denominator of this fraction in simplest form?

20/24

What is 6?

5/6

300

What is the denominator of this fraction in simplest form?

45/60

What is 4?

3/4

400

What is the denominator of this fraction in simplest form?

44/55

What is 5?

4/5

500

What is the denominator of this fraction in simplest form?

16/18

What is 9?

8/9

THE GIANT ONE...

100

What is the Giant One?

6/7 * ? = 24/28

What is 

4/4 ?

200

What is the Giant One?

20/25 * ? = 80/100

What is 

4/4 ?

300

What is the Giant One?

110/130 div ? = 11/13

What is 

10/10 ?

400

What is the Giant One?

96/108 div ? = 8/9

What is 

12/12

500

What is the Giant One?

64/80 div ? = 4/5

What is 

16/16 ?