math
posted by Anonymous .
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?

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

math 
Anonymous
how did you go about translating?

math 
Ms. Sue
What do you want to translate?

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

math 
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. 
math 
Anonymous
great thanks!

math 
Ms. Sue
You're welcome.
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