Tuesday, February 11, 2014

Methods of Subtraction

Our district adopted Math Expressions as our math curriculum (below are pictures from my teachers' manual). This is our first year with Math Expressions and I am in LOVE with it! I previously blogged about the addition strategies the students have learned. With subtraction, the students learned three strategies: Common U.S. Method, Ungroup First Method, and Expanded Method. Again, the students use Proof Pictures to show the ungrouping in subtraction and how to "take away" from the bigger number.

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