Adding/ Subtracting Fractions

Steps

100

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

Draw the X Method

200

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

Multiply the numbers in each side of the x that are circled

300

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

Find denominator by multiplying current denominators

400

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

Add or subtract current numerator, this will be your new numerator.

500

What is the final step of the X method?

Denominator stays the same - copy denominator under new numerator

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