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Practice problem

Grade 1 · 1.OA.D.7

Unknown start

Individual task

Practice problem

Grade 1 · 1.OA.D.7

Unknown change

Individual task

Practice problem

Grade 1 · 1.OA.D.7

Compare both sides

Individual task

Practice problem

Grade 1 · 1.OA.D.7

Fix the sign

Individual task

Practice problem

Grade 1 · 1.OA.D.7

Explain the equal sign

Individual task

Practice problem

Grade 1 · 1.OA.D.7

Find two answers

Individual task

Practice problem

Grade 1 · 1.OA.D.7

Use a model

Individual task

Practice problem

Grade 1 · 1.OA.D.7

Check a student

Individual task

Practice problem

Grade 1 · 1.OA.D.7

Write your own

Individual task

Practice problem

Grade 1 · 1.OA.A.1

Apples join the plate

Individual task

Practice problem

Grade 1 · 1.OA.A.1

Join two plates

Individual task

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