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Sunday, October 30, 2011

Subtraction

We have been learning to subtract 3-digit numbers using several different strategies. The students have practiced subtracting in parts, adding up, and subtracting back.

Students:
1. Which subtraction strategy do you think is the easiest to use?
2. If my problem was 321 - 248, how would you solve it?
3. How do you use addition to check your answer?

If you need help remembering which strategy is which, watch me explain the srategies by clicking HERE.

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