Lesson: Subtracting Tens Mathematics • 1st Grade

In this lesson, we will learn how to subtract a multiple of ten from a multiple of ten and model this with place value equipment.

Lesson Video

Q1:

Six 10s take away two 10s is .

Q2:

Mason is using ten frames to skip count backward by 10.

Mason says, “Seven 10s subtract five 10s equals three tens.”

Is he correct?

What mistake did he make?

Q3:

Find the number that when subtracted from 80 gives 10.

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