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Make-up Test Review
Add/Subtract Fractions
Add/Subtract Mixed Numbers
Multiply Fractions/Mixed Numbers
Divide Fractions/Mixed Numbers
100
Find the LCM: 6 and 4
6, 12 4, 8, 12 Answer: 12
100
1/8 + 5/8
Denominators match. Add numerators. 6/8 Simplify. Answer: 3/4
100
6 and 2/5 + 1 and 4/5
Same denominators. 2/5 + 4/5 = 6/5 = 1 and 1/5 6 + 1 + 1 and 1/5 Answer: 8 and 1/5
100
1/2 x 2/3
1 x 2 = 2 2 x 3 = 6 2/6 Simplify. Answer: 1/3
100
1/8 / 3/5
Flip the second fraction --> 5/3 Multiply: 1/8 x 5/3 1 x 5 = 5 8 x 3 = 24 Answer: 5/24
200
Find the GCD: 12 and 20
12: 1, 2, 3, 4, 6, 12 20: 1, 2, 4, 5, 10, 20 Answer: 4
200
3/5 - 2/5
Denominators match. Subtract numerators. 1/5 Answer: 1/5
200
6 and 2/5 + 1 and 4/10
Find LCD: 10 4/10 + 4/10 = 8/10 = 4/5 6 + 1 + 4/5 Answer: 7 and 4/5
200
9/10 x 2/3
9 x 2 = 18 10 x 3 = 30 18/30 Simplify --> 18/6 = 3 30/6 =5 Answer: 3/5
200
5/9 / 5/6
Flip the second fraction --> 6/5 Multiply: 5/9 x 6/5 5 x 6 = 30 9 x 5 = 45 30/45 Simplify Answer: 2/3
300
Solve: -23 + 24
-23 + 24 --> 24 + (-23) --> 24 - 23 Answer: 1
300
1/2 + 5/16
Find LCD: 2, 4, 6, 8, 10, 12, 14, 16 16 1/2 --> 8/16 8/16 + 5/16 Answer: 13/16
300
6 and 1/2 + 4 and 5/6
Find LCD: 6 3/6 + 5/6 = 8/6 = 1 and 2/6 = 1 and 1/3 6 + 4 + 1 + 1/3 Answer: 11 and 1/3
300
3 and 1/3 x 1 and 1/4
Change to improper fractions: 10/3 x 5/4 10 x 5 = 50 3 x 4 = 12 50/12 = 25/6 Answer: 4 and 1/6
300
3 and 1/7 / 11/7
Change to improper fraction --> 22/7 Flip second fraction --> 7/11 Multiply: 22/7 x 7/11 22 x 7 = 154 7 x 11 = 77 Simplify: 154 / 7 = 22 77 / 7 = 11 --> 22/11 Answer: 2
400
Compute: -64/-8
negative/negative is positive Answer: 8
400
3/6 - 4/9
Find LCD: 6, 12, 18 9, 18 3/6 --> 9/18; 4/9 --> 8/18 9/18 - 8/18 Answer: 1/18
400
7 and 2/3 - 1 and 1/6
Find LCD: 6 4/6 - 1/6 = 3/6 = 1/2 7 - 1 = 6 Answer: 6 and 1/2
400
2 and 1/2 x 1 and 3/5
Change to improper fractions: 5/2 x 8/5 5 x 8 = 40 2 x 5 = 10 40/10 Answer: 4
400
12 and 1/2 / 1 and 7/8
Change to improper fractions: 25/2 / 15/7 Flip second fraction --> 7/15 Multiply: 25/2 x 7/15 25 x 7 = 175 2 x 15 = 30 Simplify: 175 / 5 = 35 30 / 5 = 6 --> 35/6 Answer: 6 and 2/3
500
Order from least to greatest: 0.4 1/4 0.04 -4
1/4 = 0.25 -4 0.04 0.25 0.4 Answer: -4 0.04 1/4 0.4
500
3/8 + 1/4 + 2/10
Find LCD: 4, 8, 16, 20, 24, 28, 32, 36, 40 8, 16, 24, 32, 40 10, 20, 30, 40 15/40 + 10/40 + 8/40 Answer: 33/40
500
15 - 3 and 3/4
Borrow from 15 --> 4/4 4/4 - 3/4 = 1/4 14 - 3 = 11 Answer: 11 and 1/4
500
What is three fourths of ten?
Three fourths = 3/4 Ten = 10 = 10/1 3/4 x 10/1 3 x 10 = 30 4 x 1 = 4 30/4 = 15/2 Answer: 7 and 1/2
500
4/5 / 1/10
Flip the second fraction --> 10/1 Multiply: 4/5 x 10/1 4 x 10 = 40 5 x 1 = 5 Simplify: 40/5 Answer: 8