Fractions

Adding

100

1/3 + 1/3

2/3

200

3/5 + 1/5

4/5

300

5/8 + 3/8

8/8=1

400

3/10 + 2/10

5/10 =1/2

500

2 1/2 + 3 1/2

5 2/2=5 + 1=6

Subtracting

100

9/13-4/13

5/13

200

6/10 - 3/10

3/10

300

8/12-4/12

4/12=1/3

400

18/21 -15/21

3/21=1/7

500

8 5/6- 5 1/6

3 4/6=3 2/3

Simplifying

100

15/25

3/5

200

30/180

1/6

300

1 42/49

1 6/7

400

2 3/4

11/4

500

74/11

6 8/11

Multiplying

100

4/7 x 3/5

12/25

200

8/12 x 5/6

40/72=5/9

300

11/13 x 2/4

22/32=11/16

400

3 1/2 x 2 1/2

6 1/4

500

7 2/6 x 9 5/6

63 10/36=63 5/18

Vocab

100

Numerator

What is the top number of a fraction meaning “parts”?

200

Denominator

What is the bottom number that means “whole amount”?

300

Simplify

What does it means to reduce a fraction to its simplest form?

400

Uses the LCM

What is finding the same denominator to add or subtract?

500

Cancellation 

What do you call when simplifying opposite numerators and denominators before multiplying fractions?