Adding Fractions
Subtracting Fractions
Adding Mixed Numbers
Subtracting Mixed Number
Estimatiing Sums/Differences of Mixed Numbers
100
5/11 + 4/11
9/11
100
11/15 - 6/15=
5/15 simplify divide by 5= 1/3
100
2 3/4 + 4 1/4=
6 4/4= simplified = 7
100
10 3/4 - 8 1/4=
2 2/4 simplify divide by 2= 2 1/2
100
Estimate 6 3/4 + 5 1/3=
7 + 5 = 12
200
6/7 + 1/2
LCD=14, 12/14 + 7/14= 19/14 simplified= 1 5/14
200
5/6 - 1/6=
4/6 simplify divide by 2= 2/3
200
5 1/8 + 6 3/8=
11 4/8 simplify divide by 4= 11 1/2
200
3 20/21 - 2 6/21=
1 14/21 simplify divide by 7= 1 2/3
200
Estimate the difference of 7 2/5 - 1 3/5 =
7 - 2 = 5
300
3/8 + 1/4
LCD=8, 3/8 + 2/8 = 5/8
300
3/4 - 1/8=
5/8
300
4 1/3 + 6 4/5=
LCD: 15= 4 5/15 + 6 12/15= 8 17/15= 11 2/15
300
A standard bowling lane is 41 1/2 inches wide. The width of a bowling lane and one gutter is 50 13/16 inches. What is the width of the gutter?
LCD: 16: 50 13/16 - 41 8/16= 9 5/16inches
300
Estimate the sum of 9 3/7 + 4 8/9 =
9 + 5 = 14
400
2/3 + 2/3
4/3 simplified 1 1/3
400
3/4 -6/10=
LCD: 20= 15/20 - 12/20= 3/20
400
5 5/12 + 2 1/6=
LCD: 12= 5 5/12 + 2 2/12= 7 7/12
400
5 1/8 - 2 3/4=
LCD: 8= 5 1/8 - 2 6/8= 41/8 - 22/8= 19/8 simplify= 2 3/8
400
Estimate the difference of 9 2/10 - 4 4/5=
9 - 5 = 4
500
3/4 + 6/8
12/8 simplified = 1 4/8 = 1 1/2
500
8/9 - 2/3=
LCD: 27= 24/27 - 18/27= 6/27 simplify divide by 3= 2/9
500
9 3/5 + 4 7/15=
LCD: 15 = 9 9/15 + 4 7/15= 13 16/15= 14 1/15
500
20 1/4 - 19 1/2=
LCD: 4= 20 1/4 - 19 2/4= 81/4 - 78/4 = 3/4
500
Estimate the sum of 3 3/4 + 2 2/3 + 1 5/8=
4 + 3 + 2= 9
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