Steps
Like Denominators
Unlike Denominators Easy
Unlike Denominators Medium
Unlike Denominators Hard
100
What is the 1st step when solving addition and subtraction problems with unlike denominators?
Draw the wings
100
1/2 + 1/2 =
2/2
100
1/4 + 2/6
14/24
100
3/5 + 1/7 =
26/35
100
2/9 + 3/10 =
47/90
200

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

Multiply the numerator by what you multiplied the denominator.

200
1/4 + 2/4 =
3/4
200
1/1 + 1/6 =
7/6
200
2/4 + 3/9 =
30/36
200
12/20 + 10/15 =
380/300
300

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

Add/subtract the numerators.

300
1/5 + 3/5 =
4/5
300
2/5 + 1/6 =
17/30
300
5/10 + 1/3 =
25/30
300
8/20 + 3/15 =
260/300
400

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

Keep the denominators the same.

400
6/12 + 4/12 =
10/12
400
3/5 + 1/8 =
29/40
400
1/8 + 3/5 =
29/40
400
10/15 + 3/9 =
135/135
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.

500
10/25 + 13/25 =
23/25
500
1/5 + 1/4 =
9/20
500
8/12 + 1/20 =
172/240
500
20/40 + 30/60 =
2400/2400
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