Adding/ Subtracting Fractions

Steps

100

What is the 2nd step when solving addition and subtraction problems with unlike denominators?

Find the LCD

200

What is the 3rd step when adding/subtracting fractions with unlike denominators?

Find equivalent fractions

300

What is the 4th step when adding and subtracting fractions with unlike denominators?

Add or Subtract the numerators

400

What is the  5th step when adding and subtracting fractions with unlike denominators?

Simplify (if needed) using GCF

500

What does Mrs. Szonn always say about whether a fractions needs to be simplified? 

"When in doubt, factor it out!"

Like Denominators

100

1/2 + 1/2 =

2/2 or 1

200

1/4 + 2/4 =

3/4

300

1/5 + 3/5 =

4/5

400

6/12 + 4/12 =

5/6

500

10/25 + 13/25 =

23/25

Unlike Denominators Easy

100

1/4 + 2/6

7/12

200

1/1 + 1/6 =

7/6 or 1 1/6

300

2/5 + 1/6 =

17/30

400

3/5 + 1/8 =

29/40

500

1/5 + 1/4 =

9/20

Unlike Denominators Medium

100

3/5 + 1/7 =

26/35

200

2/4 + 3/9 =

5/6

300

5/10 + 1/3 =

25/30

400

1/8 + 3/5 =

29/40

500

8/12 + 1/20 =

43/60

Unlike Denominators Hard

100

2/9 + 3/10 =

47/90

200

12/20 + 10/15 =

19/15 or 1 4/15

300

8/20 + 3/15 =

3/5

400

11/20 - 5/12 = 

2/15

500

20/40 + 30/60 =

240/240 or 1