Math 050 Prealgebra Practice Test 3 Worksheet With Answers - Rates, Ratios And Proportions - Operations On Fractional Expressions - 2007 Page 3
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7MATH 050
Practice Test 3
Page 3
12. Divide. Be sure your answer is simplified.
12. _______________
27
3
−
÷
2
2
4
13. A certain size bottle holds exactly
pint of liquid. How many of these
13. _______________
5
bottles can be filled from a 20-pint container?
For problems 14 & 15, find the LCM (least common multiple) of each group of expressions.
14. 9 and 24
14. _______________
15. 6, 12 and 15
15. _______________
16. Gerardo and Jaime like to exercise together by running laps on a track.
16. _______________
Gerardo can complete 1 lap every 8 minutes, but it takes Jaime 18 minutes to
complete 1 lap. If they start running from the same point on the track at the
same time, in how many minutes will they both be at the same point again?
For problems 17-20, perform the operation indicated. Be sure to simplify your answers.
1
4
17. −
+
17. _______________
21
21
3
5
18. −
−
18. _______________
m m
3
1
+
19.
19. _______________
4
16
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