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Estimating
Adding Fractions
Subtracting Fractions
+Mixed Numbers
-Mixed Numbers
100

Estimate 1/2 + 2/10

1/2 + 0 = 1/2

100
2/9 + 2/3
8/9
100
7/8 - 1/3
13/24
100
5 2/8 + 3 1/8
8 3/8
100
6 2/3 - 5 1/3
1 1/3
200

Estimate 8/9 = 1/8 = ?

1-0=1

200
5/12 + 1/8
13/24
200
7/10 - 2/4
1/5
200
5 3/7 + 2 5/7
8 1/7
200
8 5/16 - 3 12/16
4 9/16
300

5/6 - 2/3 = ?

1-1/2=1/2

300
2/8 + 5/12
2/3
300
6/7 - 1/2
5/14
300
4 1/10 + 6 1/2
10 3/5
300
13 1/12 - 8 1/4
4 5/6
400

1/4 + 3/9 = ?

1/2 + 1/2 = 1 

400
5/8 + 5/6
1 11/24
400
1/2 - 3/10
1/5
400
1 7/12 + 2 3/8
3 23/24
400
6 - 2 4/5
3 1/5
500
1/2 + 1/8 + 1/4
7/8
500
5/12 - 4/16
1/6
500
2 3/4 + 7 3/5
10 7/20
500
6 1/8 - 2 5/6
3 7 /24