Lesson: Subtracting Ones from Teen Numbers: Number Line

Mathematics

In this lesson, we will learn how to model subtraction of a one-digit number from a teen number on a number line by making a jump to ten and then a jump to the result.

Worksheet: 7 Questions

Q1:

Help Emma answer a subtraction problem. She wants to find 13 take away 7.

First, she took away 3 to make 10. How much is left to take away?

What is 13 take away 7?

Q2:

Look at how James used a number line to find 15 take away 8.

First, he took away 5 to make 10.

How much was left to take away?

What is 15 take away 8?

Q3:

Use the number line to subtract.

Hint: Subtract to make 10 first.

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