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Practice problem

Grade 1 · 1.OA.B.3

Part or whole

Individual task

Practice problem

Grade 1 · 1.OA.B.3

Build a related story

Individual task

Practice problem

Grade 1 · 1.OA.D.7

Balance the equation

Individual task

Practice problem

Grade 1 · 1.OA.D.7

True equation

Individual task

Practice problem

Grade 1 · 1.OA.D.7

Unknown addend

Individual task

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.NBT.A.1

Count on

Individual task

Practice problem

Grade 1 · 1.NBT.A.1

Count back

Individual task

Practice problem

Grade 1 · 1.NBT.A.1

Read a number

Individual task

Practice problem

Grade 1 · 1.NBT.A.1

Write a numeral

Individual task

Practice problem

Grade 1 · 1.NBT.A.1

Find the gap

Individual task

Practice problem

Grade 1 · 1.NBT.A.1

Count by tens

Individual task

Practice problem

Grade 1 · 1.NBT.A.1

Compare on a chart

Individual task

Practice problem

Grade 1 · 1.NBT.A.1

Use a hundred chart

Individual task

Practice problem

Grade 1 · 1.NBT.A.1

Place a number

Individual task

Practice problem

Grade 1 · 1.NBT.A.1

Explain a pattern

Individual task

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