Lesson: Subtracting Ones from Teen Numbers: Making Ten Mathematics • 1st Grade

In this lesson, we will learn how to subtract a one-digit number from a teen number when we cross a ten by subtracting the ones in two steps.

Lesson Video

Q1:

We can make 10 to help us subtract.

Pick the calculation that matches .

Fill in the blank: .

Q2:

Which subtraction sentence is equal to ?

Q3:

Sophia is subtracting by making 10.

Which calculation should she do first?

Which calculation should she do next?