Subtraction without Renaming

$0.99/each

Subtract within 20 without crossing 10

1.OA.6, 2.OA.2

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Subtract within 20 without crossing 10 (2)

1.OA.6, 2.OA.2

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Subtract multiples of 10 within 40

1.NBT.6, 2.NBT.5

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