Addition and Subtraction Within 20

Name: Addition and Subtraction Within 20
Author: Insta~Lesson

1st Grade · Math · 30 min

Lesson Preview

I can solve addition and subtraction problems within 20.

1
Adding numbers means putting things together, like when you have 3 apples and get 2 more, you will have 5 apples.
2
Subtracting numbers means taking things away, like when you have 5 cookies and eat 1, you will have 4 cookies left.
3
We can add and subtract with numbers up to 20, which helps us count many things.

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