Unit 4: Addition and Subtraction on the Number Line

Students learn about the structure of a number line and use it to represent numbers within 100. They also relate addition and subtraction to length and represent the operations on the number line.

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Concept

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Practice

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Set 1

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Advanced

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What this unit covers

A The Structure of the Number Line · 6 lessons

Goals

• Represent whole numbers within 100 as lengths from 0 on a number line.
• Understand the structure of the number line.

Lessons

1. Whole Numbers on the Number Line
2. Features of a Number Line
3. Unlabeled Tick Marks
4. Compare Numbers on a Number Line
5. Estimate on a Number Line
6. Center Day 1 (Optional)

B Add and Subtract on a Number Line · 9 lessons

Goals

• Represent sums and differences on a number line.

Lessons

1. Addition and Subtraction on the Number Line
2. Equations on a Number Line
3. The Difference between Numbers
4. Place Value and the Number Line
5. Different Ways to Add and Subtract
6. Equations with Unknowns
7. Represent Story Problems
8. Center Day 2 (Optional)
9. Tall Enough to Ride (Optional)

Helpful to know first

The curriculum says this unit builds on these.

Grade 2 Math · Unit 3 Measuring Length

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