Curriculum / Math / 2nd Grade / Unit 5: Adding and Subtracting Within 1,000 / Lesson 27

Adding and Subtracting Within 1,000

Lesson 27

Math

Unit 5

2nd Grade

Lesson 27 of 27

Objective

Solve a three-act task that involves a two-step story problem involving addition and subtraction within 100.

Student-Facing

I can ask and answer mathematical questions that involve solving a two-step story problem within 100.

Lesson Map

Topic A: Adding with Mental Strategies

Lesson

Add and subtract 10 or 100 to or from three-digit numbers.

Standards

2.NBT.B.8

Lesson

Add and subtract multiples of 10 or 100 to or from three-digit numbers.

Standards

2.NBT.B.72.NBT.B.8

Lesson

Add within 1,000 by using a ten or hundred to make the computation easier.

Standards

2.NBT.B.7

Topic B: Adding within 1,000

Lesson

Add within 1,000 in cases where there are no compositions of larger units or a composition of a ten.

Standards

2.NBT.B.7

Lesson

Add within 1,000 in cases that require composing a hundred.

Standards

2.NBT.B.7

Lesson

Add within 1,000 in cases that require composing a ten and a hundred.

Standards

2.NBT.B.7

Lesson

Use place value drawings to add within 1,000 with up to one composition of a new unit.

Standards

2.NBT.B.7

Lesson

Add within 1,000 in all cases, relating their strategies to written methods.

Standards

2.NBT.B.72.NBT.B.9

Lesson

Add within 1,000 in all cases, recording that work using expanded form.

Standards

2.NBT.B.7

Lesson

Relate addition with place value drawings to algorithms in situations with up to two compositions of a new ten or hundred.

Standards

2.NBT.B.7

Topic C: Subtracting with Mental Strategies

Lesson

Mentally subtract 10 and 100 from numbers within 1,000.

Standards

2.NBT.B.8

Lesson

Subtract multiples of 10 and 100 from numbers within 1,000.

Standards

2.NBT.B.72.NBT.B.8

Lesson

Subtract within 1,000 by using a ten or hundred to make the computation easier.

Standards

2.NBT.B.7

Topic D: Subtracting within 1,000

Lesson

Subtract within 1,000 in cases with no decompositions or a decomposition of a ten.

Standards

2.NBT.B.7

Lesson

Subtract within 1,000 in cases that require decomposing a hundred.

Standards

2.NBT.B.7

Lesson

Subtract within 1,000 in cases that require decomposing a ten and a hundred, with all decompositions completed prior to subtracting.

Standards

2.NBT.B.7

Lesson

Subtract within 1,000 in all cases, relating their strategies to written methods.

Standards

2.NBT.B.72.NBT.B.9

Lesson

Use place value drawings to subtract within 1,000 with up to two decompositions.

Standards

2.NBT.B.7

Lesson

Subtract within 1,000 in all cases, recording that work using expanded form.

Standards

2.NBT.B.72.NBT.B.9

Lesson

Relate subtraction with expanded form to the standard algorithm in situations with up to two decompositions of a ten or hundred.

Standards

2.NBT.B.7

Topic E: Story Problems and Explaining Addition and Subtracting Thinking

Lesson

Solve one-step word problems using strategies to solve within 100.

Standards

2.NBT.B.52.OA.A.1

Lesson

Solve one- and two-step story problems involving addition and subtraction within 100.

Standards

2.NBT.B.52.OA.A.1

Lesson

Solve addition computations within 1,000 and explain strategies.

Standards

2.NBT.B.62.NBT.B.72.NBT.B.9

Lesson

Solve subtraction computations within 1,000 and explain strategies.

Standards

2.NBT.B.72.NBT.B.9

Lesson

Solve and explain strategies when adding and subtracting within 1,000.

Standards

2.NBT.B.72.NBT.B.9

Topic A: Adding with Mental Strategies

Lesson

Add and subtract within 1,000 without composition or decomposition by counting up or counting back.

Standards

2.NBT.B.72.NBT.B.8

Topic E: Story Problems and Explaining Addition and Subtracting Thinking

Lesson

Solve a three-act task that involves a two-step story problem involving addition and subtraction within 100.

Standards

2.NBT.B.52.OA.A.1

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Adding and Subtracting Within 1,000

Objective

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Student-Facing

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