Adding/ Subtracting Fractions

Steps

100

What is the 1st step when solving addition and subtraction problems with unlike denominators?

Draw the wings

200

What is the 2nd step when adding/subtracting fractions with unlike denominators?

Multiply the numerator by what you multiplied the denominator.

300

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

Add/subtract the numerators.

400

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

Keep the denominators the same.

500

List the 4 steps when adding and subtracting fractions with unlike denominators.

1. Find the lowest common denominators 2. Multiply the numerator by what you multiplied the denominator 3. Add/subtract the numerators 4. Keep the denominators the same.

Like Denominators

100

1/2 + 1/2 =

2/2

200

1/4 + 2/4 =

3/4

300

1/5 + 3/5 =

4/5

400

6/12 + 4/12 =

10/12

500

10/25 + 13/25 =

23/25

Unlike Denominators Easy

100

1/4 + 2/6

14/24

200

1/1 + 1/6 =

7/6

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 =

30/36

300

5/10 + 1/3 =

25/30

400

1/8 + 3/5 =

29/40

500

8/12 + 1/20 =

172/240

Unlike Denominators Hard

100

2/9 + 3/10 =

47/90

200

12/20 + 10/15 =

380/300

300

8/20 + 3/15 =

260/300

400

10/15 + 3/9 =

135/135

500

20/40 + 30/60 =

2400/2400