Curriculum / Math / 2nd Grade / Unit 1: Adding and Subtracting Within 20 / Lesson 10

Adding and Subtracting Within 20

Lesson 10

Math

Unit 1

2nd Grade

Lesson 10 of 15

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Objective

Use doubles facts to solve addition and subtraction problems within 20.

Student-Facing

I can use doubles facts as a strategy to solve addition and subtraction equations.

Lesson Map

Topic A: Adding and Subtracting within 10 and Counting

Solve addition and subtraction equations within 10 using various strategies.

Standards

2.OA.B.2

Use related facts to add and subtract within 10.

Standards

2.OA.B.2

Use mental math to add and subtract within 10.

Standards

2.OA.B.2

Count by ones and tens within 200.

Standards

2.NBT.A.2

Topic B: Strategies to Add and Subtract within 20

Use facts to 10 to apply make ten strategy to add within 20.

Standards

2.OA.B.2

Solve unknown addend equations within 20.

Standards

2.OA.B.2

Relate subtraction to addition to solve within 20.

Standards

2.OA.B.2

Subtract within 20 with strategies (going down over ten) Day 1.

Standards

2.OA.B.2

Subtract within 20 with strategies (going down over ten) Day 2.

Standards

2.OA.B.2

Use doubles facts to solve addition and subtraction problems within 20.

Standards

2.OA.B.2

Solve and explain strategies used to solve equations within 20.

Standards

2.OA.B.2

Topic C: Story Problems within 20

Represent story problems visually within 20.

Standards

2.OA.A.1

Solve and represent story problems using tape diagrams.

Standards

2.OA.A.1

Solve add to and take from word problems within 20.

Standards

2.OA.A.1

Solve put together and take apart problems within 20.

Standards

2.OA.A.1

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