Counting by Ones and Tens

Front

What is counting by ones?

Back

Counting by ones means adding one more each time, like 1, 2, 3, 4, 5.

Front

What is counting by tens?

Back

Counting by tens means adding ten more each time, like 10, 20, 30, 40.

Front

What comes after 510 when counting by tens?

Back

520.

Front

What comes before 610 when counting by tens?

Back

600.

Front

What is ten more than 900?

Back

910.

Front

What is ten less than 900?

Back

890.

Front

What is ten more than 212?

Back

222.

Front

What is ten less than 212?

Back

202.

Front

Fill in the missing numbers: 510, 610, ____, 810, ____, 1010.

Back

710 and 910.

Front

Continue this sequence: 19, 29, 39, ____, ____, ____.

Back

49, 59, 69.