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March 29, 2015

Homework Help: 5th grade math (word problems)

Posted by Alex on Monday, May 6, 2013 at 5:57pm.

Can you explain how to do the following problems?

1. Order these fractions from Greatest to least. 3/12, 5/8, 1/4, 7/8, 4/16

work: find least common denominator
3/12 = 12/48, 5/8 = 30/48, 1/4 = 12/48, 7/8 = 42/48

answer = 7/8, 5/8, since 3/12 and 1/4 are the same, which would be greater?

2.Kelsie worked 172 minutes on homework this week. Her teacher estimates it should take 2 3/4 hours for the work. How much more or less did Kelsie work?

work: 172/60 = 2.86 hours
2.86 - 2.75 = 11 minutes less?

3. A line plot shows 10 beakers measured in Liters. If the liquid is distributed evenly, how much liquid is in each beaker if total liquid is 3 7/8 (three & seven eighths)Liters?

work: (3 7/8)/10 = (3 7/8 * 1/10) = 31/80 = .3875

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