Lesson: Subtracting Ones from Teen Numbers: Number Line Mathematics

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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.

Lesson Plan

Students will be able to

break apart the subtrahend in an equation to make 10,
model subtraction on a number line:
- subtract to make 10,
- subtract the remaining ones,
write a subtraction equation showing the subtraction of a one-digit number from a teen number,
subtract using labeled number lines and open number lines.