Fractions Test 1 KEY Name____________________________________

1.       Add 1/2 + 1/4
Answer: 3/4


1.       Add 1/3 + 1/6
Answer: 3/6 or 1/2


1.       Add 1/4 + 3/8
Answer: 5/8


1.       Add 1/3 + 1/9
Answer: 4/9


2.       Subtract 2/3 - 1/6
Answer: 3/6 or 1/2


2.       Subtract 2/5 - 1/10
Answer: 3/10


2.       Subtract 3/5 - 1/10
Answer: 5/10 or 1/2


2.       Subtract 2/3 - 1/9
Answer: 5/9


3.       Add 1/4 + 3/5
Answer: 17/20


3.       Add 1/3 + 2/5
Answer: 11/15


3.       Add 1/4 + 3/7
Answer: 19/28


3.       Add 1/3 + 3/8
Answer: 17/24


4.       Subtract 2/3 - 1/5
Answer: 7/15


4.       Subtract 2/5 - 1/9
Answer: 13/45


4.       Subtract 3/5 - 1/9
Answer: 22/45


4.       Subtract 2/3 - 1/8
Answer: 13/24


5.       Add 2/5 + 4/5 and write as both a fraction and mixed number.
Answer: 6/5, 1 1/5


5.       Add 3/4 + 3/4 and write as both a fraction and mixed number
Answer: 6/4 or 3/2, 1 1/2


5.       Add 2/7 + 6/7 and write as both a fraction and mixed number.
Answer: 8/7, 1 1/7


5.       Add 5/8 + 7/8 and write as both a fraction and mixed number.
Answer: 12/8 or 3/2, 1 4/8 or 1 1/2


6.       Subtract 5/8 - 3/8 and reduce the answer
Answer: 1/4


6.       Subtract 7/9 - 4/9 and reduce the answer
Answer: 1/3


6.       Subtract 5/16 - 1/16 and reduce the answer
Answer: 1/4


6.       Subtract 5/6 - 2/6 and reduce the answer
Answer: 1/2


7.       Add 3/7 + 5/9
Answer: 62/63


7.       Add 4/5 + 7/8
Answer: 1 27/40 or 67/40


7.       Add 2/3 + 5/11
Ansewr: 1 4/33 or 37/33


7.       Add 3/4 + 5/9
Answer: 1 11/36 or 47/36


8.       Subtract 5/7 - 5/9
Answer: 10/63


8.       Subtract 4/5 - 3/8
Answer: 17/40


8.       Subtract 3/5 - 2/7
Ansewr: 11/35


8.       Subtract 5/7 - 5/8
Answer: 5/56


9.       Add 5/12 + 6/20 after finding the Least Common Denominator
Answer: LCD is 60, Sum is 43/60


9.       Add 4/15 + 3/20 after finding the Least Common Denominator
Answer: LCD is 60, Sum is 5/12


9.       Add 7/15 + 5/18 after finding the Least Common Denominator
Answer: LCD is 90, Sum is 67/90


9.       Add 7/12 + 3/20 after finding the Least Common Denominator
Answer: LCD is 60, Sum is 11/15


10.       Subtract 13/20 - 5/14 after finding the Least Common Denominator
Answer: LCD is 140, Difference is 41/140


10.       Subtract 11/20 - 5/14 after finding the Least Common Denominator
Answer: LCD is 140, Difference is 27/140


10.       Subtract 17/20 - 5/14 after finding the Least Common Denominator
Answer: LCD is 140, Difference is 69/140


10.       Subtract 9/20 - 5/14 after finding the Least Common Denominator
Answer: LCD is 140, Difference is 13/140


11.       Add 1 1/3 + 1 2/9
Answer: 2 5/9


11.       Add 1 1/2 + 1 3/8
Answer: 2 7/8


11.       Add 1 1/5 + 1 3/10
Answer: 2 1/2 or 2 5/10


11.       Add 1 1/4 + 1 5/12
Answer: 2 8/12 or 2 2/3


12.       Subtract 3 1/3 - 1 2/9
Answer: 2 1/9


12.       Subtract 2 1/2 - 1 3/8
Answer: 1 1/8


12.       Subtract 1 4/5 - 1 3/10
Answer: 5/10 or 1/2


12.       Subtract 6 1/4 - 1 1/12
Answer: 5 2/12 or 5 1/6


13.       Add 1 1/12 + 3 2/14 after finding the Least Common Denominator
Answer: LCD is 84, Sum is 4 19/84


13.       Add 1 1/14 + 3 3/18 after finding the Least Common Denominator
Answer: LCD is 126, Sum is 4 5/21 or 4 30/126


13.       Add 1 1/15 + 1 3/12 after finding the Least Common Denominator
Answer: LCD is 60, Sum is 2 19/60


13.       Add 1 1/14 + 1 5/12 after finding the Least Common Denominator
Answer: LCD is 84, Sum is 2 41/84


14.       Subtract 3 1/3 - 1 7/9
Answer: 1 5/9


14.       Subtract 2 1/2 - 1 5/8
Answer: 7/8


14.       Subtract 6 3/5 - 1 7/10
Answer: 4 9/10


14.       Subtract 6 1/4 - 1 7/12
Answer: 4 2/3 or 4 8/12


15.       Add 1/2 + 1/5 + 5/6 + 2/3
Answer: 2 1/5 or 11/5 or 66/30


15.       Add 2/3 + 1/7 + 5/6 + 3/4
Answer: 5 9/14 or 79/14 or 474/84


15.       Add 1/2 + 2/5 + 5/8 + 2/3
Answer: 4 21/40 or 181/40 or 543/120


15.       Add 1/3 + 1/5 + 5/6 + 3/4
Answer: 5 11/30 or 161/30 or 322/60


16.       Add 3/10 + 1/12 + 5/14 after finding the Least Common Denominator
Answer: LCD is 420, Sum is 311/420


16.       Add 3/8 + 1/12 + 5/14 after finding the Least Common Denominator
Answer: LCD is 168, Sum is 137/168


16.       Add 1/4 + 1/15 + 5/21 after finding the Least Common Denominator
Answer: LCD is 420, Sum is 233/420


16.       Add 4/15 + 1/12 + 5/14 after finding the Least Common Denominator
Answer: LCD is 420, Sum is 99/140 or 297/420


17.       Evaluate (1/3 + 3/5) - 1/7
Answer: 83/105


17.       Evaluate (1/4 + 3/5) - 1/7
Answer: 99/140


17.       Evaluate (1/2 + 3/5) - 5/7
Answer: 27/70


17.       Evaluate (1/3 + 3/5) - 1/7
Answer: 83/105


18.       Evaluate 3/4 - (1/7 + 3/15)
Answer: 57/140 or 171/420


18.       Evaluate 7/8 - (1/7 + 3/15)
Answer: 149/280 or 447/840


18.       Evaluate 3/4 - (3/7 + 3/15)
Answer: 17/140 or 51/420


18.       Evaluate 5/8 - (1/7 + 3/15)
Answer: 79/280 or 237/840


19.       Add 1/131 + 3/111
Answer: 504/14541 or 168/4847


19.       Add 3/121 + 2/117
Answer: 593/14157


19.       Add 2/113 + 1/101
Answer: 315/11413


19.       Add 3/111 + 1/109
Answer: 438/12099 or 146/4033


20.       Subtract 3/131 - 1/111
Answer: 202/14541


20.       Subtract 3/121 - 2/117
Answer: 109/14157


20.       Subtract 2/113 - 1/101
Answer: 89/11413


20.       Subtract 3/111 - 1/109
Answer: 216/12099 or 72/4033


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