Lesson: Subtraction within 20 by Counting Backward on a Number Line

In this lesson, we will learn how to use a number line to subtract within 20 by counting back and how to write subtraction sentences describing jumps on a number line.

Sample Question Videos

00:37
00:51
01:50

Worksheet: Subtraction within 20 by Counting Backward on a Number Line • 11 Questions • 5 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, Fares started at 20 and counted backward until he reached 15.

Which number sentence describes what Fares did?

Q4:

Count back to subtract.

Find the difference.

Q5:

Count back to subtract.

Find the difference.

Q6:

I start at a number and count backward. Does this represent adding or subtracting?

Q7:

On this number line, Sherif started at 5 and counted back three. Which of these describes what Sherif did?

Q8:

Abdullah was playing a game. First, he moved his counter 8 spaces forward. Then, he moved it 3 spaces backward.

How many spaces from the start is his counter?

Q9:

Count back to subtract.

Find the difference.

Q10:

Use the number line to complete the following subtraction sentence.

Q11:

Fill in the missing number.

Use the number line if you need to.

Preview