Counting On and Counting Back

Front

10 - 2 = ?

Back

8

Front

12 + 2 = ?

Back

14

Front

15 - 1 = ?

Back

14

Front

20 - 1 = ?

Back

19

Front

15 + 3 = ?

Back

18

Front

What is counting on?

Back

Counting on is adding numbers starting from a given number.

Front

What is counting back?

Back

Counting back is subtracting numbers starting from a given number.

Front

What does the plus sign (+) mean?

Back

The plus sign means to add.

Front

What does the minus sign (-) mean?

Back

The minus sign means to subtract.

Front

If I have 5 apples and I get 3 more, how many do I have?

Back

8