Posted by Anonymous on .
Help please. Word problems.
Alex has 15 friends. She has 36 chocolate cookies. She wants each friends to have 3 chocolate cookies. how many more cookies does she need?

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Ms. Sue,
15 * 3 = 45
45  36 = ? 
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Anonymous,
thanks!

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Anonymous,
how did you go about translating?

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Ms. Sue,
What do you want to translate?

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Anonymous,
how did you know it was multiplicaton instead of division or addition

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Ms. Sue,
You could add.
First friend = 3 cookies
Second friend = 3 cookies
Third friend = 3 cookies
Fourth friend = 3 cookies
and so on
But it's certainly quicker to multiply the number of friends by the number of cookies each should get. 
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Anonymous,
great thanks!

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Ms. Sue,
You're welcome.