Least Common Denominator
GCF/Simplify Fractions
Adding and Subtracting
Mixed Numbers
Subtracting with Regrouping
100
What is the least common denominator of 2 and 8?
8.
100
Simplify 5/10
1/2
100
1/2 + 1/4
3/4
100
1 1/3 + 1 1/2
2 5/6
100
1 1/4 - 3/8
7/8
200
What is the least common denominator of 12 and 9?
36
200
Simplify 25/40
5/8
200
5/8 - 1/2
1/8
200
3 3/4 - 1 1/8
2 5/8
200
3 1/6 - 2 7/12
7/12
300
Make equivalent fractions: 3/8 + 1/4
3/8 + 2/8
300
Simplify 42/20
2 1/10
300
1/3 + 7/18
13/18
300
2 6/9 + 3 5/27
5 23/27
300
1 3/15 - 3/5
3/5
400
Make equivalent fractions: 1/3 + 4/9
3/9 + 4/9
400
Simplify 55/10
5 1/2
400
3/7 - 2/21
1/3
400
1 5/8 + 2 15/24
4 1/4
400
1 3/9 - 13/27
23/27
500
Make equivalent fractions: 2/5 + 3/8
16/40 + 15/40
500
Simplify 51/16
3 3/16
500
2/8 + 3/5
17/20
500
7 2/3 - 5 17/30
2 1/10
500
4 1/40 - 2 3/8
1 17/40
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