Asked by Zoe

Ricky needs 3 1/4 cups of sugar to make candy. He already has 2 1/2 cups. How many more cups of sugar does he need?

Do you add for this question or subtract? That's all that I need to know.
Answered by Steve
subtract what he has from the total.
Answered by Ms. Sue
Try both adding and subtracting. Which gives a reasonable answer for that question.

Answered by Zoe
From the total of what, Steve? Do you mean to add first and then subtract?
Answered by Zoe
I need to solve it, but all I need to personally need to know is if you add or subtract. If you tell me to example add, that won't be giving me the answer.
Answered by Ms. Sue
What part of Steve's answer don't you understand?

The total is the amount of sugar he needs.

Answered by Steve
Look.

If I said I had to pick 10 apples, but I only had 7 so far, how would you decide the number I still needed?

Don't let the fractions scare you. They're just numbers.
Answered by smitty
you subtract
Answered by Kyle
Right
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