adding fractions
adding mixed numbers
subtracting fractions
subtracting mixed numbers
choose the best estimate
100
7/10 + 3/5
1 3/10
100
2 1/4 + 7 5/6 =
10 1/12
100
5/8 - 1/8
1/2
100
15 13/16 - 3
12 13/16
100
3 4/5 + 1 3/10 a - 6 b - 5 c - 4 d - 3
b - 5
200
1/10 + 3/8
19/40
200
3 5/8 + 9 2/3
13 7/24
200
9/10 - 2/10
7/10
200
25 3/8 - 23 1/4
2 1/8
200
8 2/3 + 6 3/5 a - 14 b - 15 c - 16 d - 17
c - 16
300
1/3 + 8/9
1 2/9
300
42 1/10 + 16 2/5
58 1/2
300
3/4 - 1/6
7/12
300
19 1/6 - 6 1/2
12 2/3
300
4 1/5 - 1 7/10 a - 1 b - 2 c - 3 d - 5
b - 2
400
2/3 + 4/5
1 7/15
400
31 1/2 + 9 1/6
40 2/3
400
13/20 - 3/10
7/20
400
19 9/10 - 10 1/4
9 13/20
400
57 5/6 - 21 1/6 a - 80 b - 70 c - 50 d - 40
d - 40
500
5/8 + 1/6
19/24
500
8 2/3 + 6 7/15
15 2/15
500
11/12 - 2/3
1/4
500
51 1/2 - 13 3/4
37 3/4
500
78 11/12 - 49 7/12 a - 30 b - 35 c - 40 d - 45
a - 30
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