Lesson: Subtracting Numbers up to 20 on a Number Line

In this lesson we will learn how to subtract within 20 by jumping backward in ones on a number line.

Sample Question Videos

Q1:

Find the number sentence that matches this number line.

Q2:

Fill in the missing number.

Use the number line if you need to.

Q3:

On this number line, Daniel started at 20 and counted backward until he reached 15.

Which number sentence describes what Daniel did?

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