# Lengths using Number Lines

Videos and solutions to help Grade 2 students learn how to identify unknown numbers on a number line diagram by using the distance between numbers and reference points.

Common Core Standards: 2.MD.5, 2.MD.6, 2.NBT.2, 2.NBT.4, 2.NBT.5

Related Topics:
Common Core Math Resources, Lesson Plans & Worksheets for all grades
Common Core Math Video Lessons, Math Worksheets and Games for Grade 2
Common Core Math Video Lessons, Math Worksheets and Games for all grades

### New York State Common Core Math Module 7, Grade 2, Lesson 21

Topic E: Problem Solving with Customary and Metric Units

NYS Math Grade 2 Module 7 Lesson 21
Lesson 21 Homework

Find the value of the point on each part of the meter strip marked by a letter.
1. - 3. For each number line, one unit is the distance from one hash mark to the next.

4. Each hash mark represents 5 more on the number line.
What is the difference between D and E?

5. Each hash mark represents 10 more on the number line.
What is the difference between the two endpoints?

6. Each hash mark represents 10 more on the number line.
What is the difference between the two endpoints?

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