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

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

Lesson

Solve addition and subtraction equations within 10 using various strategies.

Standards

2.OA.B.2

Lesson

Use related facts to add and subtract within 10.

Standards

2.OA.B.2

Lesson

Use mental math to add and subtract within 10.

Standards

2.OA.B.2

Lesson

Count by ones and tens within 200.

Standards

2.NBT.A.2

Topic B: Strategies to Add and Subtract within 20

Lesson

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

Standards

2.OA.B.2

Lesson

Solve unknown addend equations within 20.

Standards

2.OA.B.2

Lesson

Relate subtraction to addition to solve within 20.

Standards

2.OA.B.2

Lesson

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

Standards

2.OA.B.2

Lesson

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

Standards

2.OA.B.2

Lesson

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

Standards

2.OA.B.2

Lesson

Solve and explain strategies used to solve equations within 20.

Standards

2.OA.B.2

Topic C: Story Problems within 20

Lesson

Represent story problems visually within 20.

Standards

2.OA.A.1

Lesson

Solve and represent story problems using tape diagrams.

Standards

2.OA.A.1

Lesson

Solve add to and take from word problems within 20.

Standards

2.OA.A.1

Lesson

Solve put together and take apart problems within 20.

Standards

2.OA.A.1

Bring Fishtank
to Your School

New Math Materials Now Live!

Now Live: All new Grade 1 units and enhanced Grade 7-8 materials. Coming soon: Brand new Kindergarten course and enhanced Grade 6!

Adding and Subtracting Within 20

Objective

Are You Sure?

Student-Facing

New Math Materials Now Live!