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Practice problem

Grade 1 · 1.NBT.C.4

Add a multiple of ten

Individual task

Practice problem

Grade 1 · 1.NBT.C.4

Subtract tens

Individual task

Practice problem

Grade 1 · 1.NBT.C.4

Add in parts

Individual task

Practice problem

Grade 1 · 1.NBT.C.4

Subtract in parts

Individual task

Practice problem

Grade 1 · 1.NBT.C.4

Estimate then solve

Individual task

Practice problem

Grade 1 · 1.NBT.C.4

Explain regrouping

Individual task

Practice problem

Grade 1 · 1.NBT.C.4

Exit calculation

Individual task

Practice problem

Grade 1 · 1.NBT.C.4

Word problem

Individual task

Practice problem

Grade 1 · 1.NBT.C.4

Word problem

Individual task

Practice problem

Grade 1 · 1.NBT.C.4

Check an answer

Individual task

Practice problem

Grade 1 · 1.NBT.C.4

Reteach with blocks

Individual task

Practice problem

Grade 1 · 1.NBT.C.4

Create a problem

Individual task

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