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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 wings and write the answer on the antennas.
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 a body and multiply the denominators. This will be your new denominator.
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?
Add or subtract the antennas, this will be your numerator.
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. Draw the wings 2. multiply the wings and write the answers on the antennas 3. Draw a body, connecting the denominators. Multiply the denominators. This will be your new denominator. 4. Add/Subtract the antennas to get your numerator.
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