Trading in Subtraction

Second graders solve two-digit subtraction problems without trades using counters and by modeling trades with base-ten blocks. They pair in groups and students open the "Counters Open Mat". Students are given a problem, such as: there were forty second graders at a party. Then thirteen went back to their class-room. How many were left at the party?

2nd Math 5 Views 20 Downloads
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Lesson Plans
Instructional Strategies
Skills Practice
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45 mins

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