Years 6 – 9 TIMES NINE

Complete the calculations in the picture.

What do you notice?

To explain how the patterns of numbers arise:

Either multiply by (10 – 1) instead of multiplying by 9

or use the table below, first completing the calculations on each line.

The picture shows the pyramids in the background because this number pattern, and others like it, were known to the ancient Egyptians.

Click here for the Notes for Teachers