Operations with Fractions

Addition

100

1/3+2/5=

11/15

200

8/9+7/10

1 53/90

300

2/5 + 1 1/6

1 17/30

400

4 1/3+7 1/2

11 5/6

500

5 1/8+7 9/10

13 1/40

Subtraction

100

5/8-1/8

1/2

200

7/10-2/5

3/10

300

11 3/4-8 1/3

3 5/12

400

9-7 4/5

1 1/5

500

5 2/3-3 5/6

1 5/6

Multiplication

100

5/7xx 2/3

10/21

200

9/10xx20/27

2/3

300

8xx3/8

3

400

1 2/5xx2 1/4

3 3/20

500

1 7/18xx2 1/10

2 11/12

Division

100

5/8/2/3

15/16

200

4/5 / 3/10

2 2/3

300

12 /(2/5)

30

400

2 1/3 / 3

7/9

500

5 3/4 / 2 1/2

2 3/10

Other

100

Do you need common denominators when adding or subtracting fractions?

Yes

200

Do you need common denominators to multiply or divide fractions?

No

300

Which operation is Keep Change Flip used for?

Division

400

For which operation can you use cross simplifying?

When multiplying fractions

500

Which operations are commutative?

Addition and multiplication