Subtracting Numbers within 20

Subtracting Numbers within 20

1st Grade · Math · 39 min

Lesson Preview

Learning Objective

I can subtract numbers within 20 using objects or drawings.

  • 1

    When you subtract, you end up with less than what you started with.

  • 2

    4 - 2 = 2, so four buttons minus two buttons is two buttons.

  • 3

    5 - 4 = 1, so five bananas minus four bananas is one banana.

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