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←MathGrade 1Fluency

Knowledge atom

Decompose to subtract across the ten

G1.FLU.16Grade 1FluencySource mission: Subtract Across Ten & Recall Differences

Subtracts a teen number by first going down to ten, then removing the rest.

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Evidence progress0 of 2 pieces collected
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Standards alignment

1.OA.C.6 1.OA.IA.C.2

Prerequisites

Common misconceptions

  • splits the subtrahend but then adds the second part back instead of removing it

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Subtracts a teen number by first going down to ten, then removing the rest.

Estimated time: ~5 min

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