Reading, writing and representing numbers

article
Multiplication series: number arrays

This article for teachers describes how number arrays can be a useful representation for many number concepts.
interactivity
Favourite

Dominoes environment

Age

5 to 11

Challenge level

These interactive dominoes can be dragged around the screen.
problem
Eightness of eight

Age

5 to 7

Challenge level

What do you see as you watch this video? Can you create a similar video for the number 12?
problem
Number lines in disguise

Age

7 to 14

Challenge level

Some of the numbers have fallen off Becky's number line. Can you figure out what they were?
problem
Representing numbers

Age

7 to 11

Challenge level

Find as many different ways of representing this number of dots as you can.
problem
Roman numerals

Age

7 to 11

Challenge level

Can you find some examples when the number of Roman numerals is fewer than the number of Arabic numerals for the same number?