Homework Help: 5th grade math (word problems)

Posted by Alex on Wednesday, December 12, 2012 at 7:01am.

I didn't see an answer from yesterday, so resending. Also, is there a website to explain how to solve word problems - like key phrases to look for (ex: 'in all' - add; 'what's left' - subtraction)?

Here's question from yesterday:
sorry,but I don't understand word problems - like what formula/expression to use. Here's the 1st problem: Rob practiced 3/5 of his music in 25minutes. About how long does it take to practice all of his music?

I know that Rob has 2/5 left of music to practice. So, do I multiply 2/5 by 25minutes?

Here's the 2nd problem: Jared vowed to walk 100miles a month. If he can walk 1/2mile in 20minutes, how many minutes will it take him to walk 100miles?

In this case, do i multiply 100 by 1/2, then multiply by 20minutes?

5th grade math (word problems) - anonymous, Wednesday, December 12, 2012 at 7:53am
1: 41.66 minutes
(25*5)/3
2.: 4000 minutes
(100*20)/(0.5)
5th grade math (word problems) - Alex, Wednesday, December 12, 2012 at 8:02pm
Could you explain why you divided 25 by 3/5?
5th grade math (word problems) - kaitlyn, Monday, January 21, 2013 at 9:56pm
For the first question divide 3 in two 25 your answer is the equation subtracted from 25

2nd question=200×20=your answer

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