Show:
Addition
Subtraction
Multiplication
Division
LCM
100

1/4 + 2/4

3/4

100

4/3 -1/3

3/3

100

2/3 X 6/8

12/24

100

1/2  divided by 1/4 

4/2 or 2

100

What is the LCM of 5 and 20

20

200

2/8 + 5/8

7/8

200

5/5 -2/5

3/5

200

5/6 X 5/6

25/36

200

What does KCF mean? 

Keep (the first fraction)

Change (division to multiplication)

Flip (the 2nd fraction to it's reciprocal)

200

What is the LCM of 2 and 12?

12

300

1/4 + 1/2

3/4

300

1/2 - 2/8

2/8

300

7/8 X 1/2

7/16

300

3/4 divided by 2/3

9/8

300

What is the LCM of 5 and 8?

40

400

2/3 + 3/8

25/24

400

5/6 -3/4

1/2

400

3/10 X 5/6

15/60

400

5/6 divided by 3/6

30/18 or 5/3

400

What is the LCM of 7 and 8?

56

500

6/7 + 3/4

45/28

500

2/8 - 1/7

6/56

500

8/9 X 3/5

24/25

500

4/8 divided by 2/3

12/16 or 6/8

500

What is the LCM of 3 and 7?

21