- Graded lesson
Chapter 3
Addition and Subtraction Facts through 20
Learn
- Lesson 3.1a · Adding to 11 · Part 1
- Lesson 3.1b · Adding to 11 · Part 2
- Lesson 3.2a · Subtracting from 11 · Part 1
- Lesson 3.2b · Subtracting from 11 · Part 2
- Lesson 3.3a · Adding to 12 · Part 1
- Lesson 3.3b · Adding to 12 · Part 2
- Lesson 3.3c · Adding to 12 · Part 3
- Lesson 3.4a · Subtracting from 12 · Part 1
- Lesson 3.4b · Subtracting from 12 · Part 2
- Lesson 3.4c · Subtracting from 12 · Part 3
- Lesson 3.5a · Adding to 13 · Part 1
- Lesson 3.5b · Adding to 13 · Part 2
- Lesson 3.5c · Adding to 13 · Part 3
- Lesson 3.6a · Subtracting from 13 · Part 1
- Lesson 3.6b · Subtracting from 13 · Part 2
- Lesson 3.6c · Subtracting from 13 · Part 3
- Lesson 3.7a · Adding to 14 · Part 1
- Lesson 3.7b · Adding to 14 · Part 2
- Lesson 3.8a · Subtracting from 14 · Part 1
- Lesson 3.8b · Subtracting from 14 · Part 2
- Lesson 3.8c · Subtracting from 14 · Part 3
- Lesson 3.9a · Fact Families 11 through 15 · Part 1
- Lesson 3.9b · Fact Families 11 through 15 · Part 2
- Lesson 3.10a · Addition and Subtraction Facts through 15 · Part 1
- Lesson 3.10b · Addition and Subtraction Facts through 15 · Part 2
- Lesson 3.10c · Addition and Subtraction Facts through 15 · Part 3
- Lesson 3.10d · Addition and Subtraction Facts through 15 · Part 4
- Lesson 3.10e · Problem Solving · Part 5
- Lesson 3.11a · Fact Families 16 through 20 · Part 1
- Lesson 3.11b · Fact Families 16 through 20 · Part 2
- Lesson 3.12a · Addition and Subtraction Facts through 16 · Part 1
- Lesson 3.12b · Addition and Subtraction Facts through 16 · Part 2
- Lesson 3.12c · Addition and Subtraction Facts through 16 · Part 3
- Lesson 3.12d · Addition and Subtraction Facts through 16 · Part 4
- Lesson 3.12e · Problem Solving · Part 5
- Lesson 3.13a · Using Addition for Subtraction · Part 1
- Lesson 3.13b · Using Addition for Subtraction · Part 2
- Lesson 3.13c · Using Addition for Subtraction · Part 3
- Lesson 3.14a · Addition and Subtraction Facts through 18 · Part 1
- Lesson 3.14b · Addition and Subtraction Facts through 18 · Part 2
- Lesson 3.14c · Addition and Subtraction Facts through 18 · Part 3
- Lesson 3.14d · Addition and Subtraction Facts through 18 · Part 4
- Lesson 3.14e · Problem Solving · Part 5
- Lesson 3.15a · Using Addition for Subtraction · Part 1
- Lesson 3.15b · Using Addition for Subtraction · Part 2
- Lesson 3.15c · Using Addition for Subtraction · Part 3
- 3.16 More- and Less-Than Facts 11 through 20
Practice
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