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Addition and subtraction

Strategies first, then the written method: regrouping ones into a ten and tens into a hundred, and opening one back up to subtract.

3 exercises
1 Strategies, parts and comparisonGrade 2Before the column method: part and whole, how many more, and adjusting to a round number.10 questions For members 2 Addition with regroupingGrade 2Ten ones become a ten, and ten tens become a hundred.10 questions For members 3 Subtraction with regroupingGrade 2Opening a ten back into ones, a hundred back into tens, and working across a zero.10 questions For members