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Adding and Subtracting Fractions Answer Key

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Adding Fractions with Like Denominators
#1 4/12 + 3/12= 7/12
#2 1/10 + 6/10= 7/10
#3 2/9 + 1/9= 3/9= 1/3
#4 1/6 + 3/6= 4/6= 2/3
#5 1/8 + 3/8= 4/8= 1/2
Subtracting Fractions with Like Denominators
#1 11/12- 4/12= 7/12
#2 8/9- 1/9 7/9
#3 9/10- 1/10 8/10= 4/5
#4 5/9- 2/9 3/9= 1/3
#5 8/6- 2/6 4/6= 2/3
Name that LCD
#1 4/8 + 1/4= 8
#2 4/14 + 1/7= 14
#3 5/6 + 1/5= 30
#4 7/12- 1/8= 24
#5 4/6- 1/9 18
Adding fractions with Unlike Denominators
#1 2/5 + 2/4= 18/20 = 9/10
#2 4/8 + 1/3= 20/24 = 5/6
#3 1/4 + 2/6= 14/24 = 7/12
#4 2/8 + 1/6= 10/24 = 5/12
#5 1/3 + 4/10= 22/30 =11/15
Subtracting Fractions with Unlike Denominators
#1 9/10 -1/2= 4/10 = 2/5
#2 4/6 -1/3= 2/6 = 1/3
#3 7/10-2/5= 3/10
#4 5/12- 1/6 = 3/12 = 1/4
#5 1/2 - 1/3= 1/6
Final Question
4/9 + 3/4= 43/36 = 1 7/36