Subtract neighboring ones digits

9 Subtract neighboring ones digits within 100.png
9 Subtract neighboring ones digits within 100.png

Subtract neighboring ones digits

0.99

2.OA.1, 2.NBT.5

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About This Sprint

  • Subtract single-digit numbers from 2-digit numbers.

  • Mental math strategy, e.g.

27 - 7 = 20

27 - 6 is one more than 20

27 - 8 is one less than 20