Counting by ones and tens

Front

162 + 10 = ?

Back

172

Front

Can counting by ones and tens work together?

Back

Yes

Front

39 + 1 = ?

Back

40

Front

45 + 10 = ?

Back

55

Front

29 + 10 = ?

Back

39

Front

What is counting by ones?

Back

Counting one number at a time, like 1, 2, 3, 4.

Front

What is counting by tens?

Back

Counting ten numbers at a time, like 10, 20, 30, 40.

Front

If you have 10 and add 10, what do you get?

Back

20

Front

If you have 20 and add 1, what do you get?

Back

21

Front

What is the next number after 39 when counting by ones?

Back

40