Lesson: Subtracting Ones from Teen Numbers: Number Line Elementary School • Mathematics • 2nd Grade

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.

Video

05:44

Sample Question Videos

01:17
01:03
01:12

Worksheet

Q1:

Help Amelia 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 David 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.

Preview