If the sum of the digits in an integer is a multiple of 9, then the integer itself is a multiple of 9. For example 189: 1 + 8 + 9 = 18, which is a multiple of 9, so 189 is also a multiple of 9.

You're at the last times table. Great job so far!  Watch this video to fill in the final cell in the times tables.

Practice multiplying by 9 on the next page, or try the 

The cells which are next to each other in a table.

The cells which are under each other in a table.

A line with numbers going on forever in both directions from 0.

The result of multiplying numbers together.

Every number in a multiplication problem that is multiplied is called a factor.

The Times Tables

How Does the 9 Times Table Work?