Subtraction within 20

Front

What is subtraction?

Back

Subtraction is taking away a number from another number. It shows how many are left.

Front

What does the minus sign (-) mean?

Back

The minus sign means to subtract or take away.

Front

What is 12 - 4?

Back

8

Front

What is 15 - 7?

Back

8

Front

What is 16 - 4?

Back

12

Front

What is 15 - 5?

Back

10

Front

What is 20 - 10?

Back

10

Front

If you have 10 apples and give away 3, how many do you have left?

Back

7 apples.

Front

What is the result of subtracting a larger number from a smaller number?

Back

You cannot subtract a larger number from a smaller number without getting a negative number.

Front

What is a number line?

Back

A number line is a straight line with numbers placed at equal intervals. It helps visualize addition and subtraction.