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Digits are the figures 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. These ten digits make up all our numbers. Where the digit is, or its place in the number, tells us what the number actually is. This is called place value, which we will cover in 2D.

Whole numbers and integers

Whole numbers are exact numbers – they are for whole numbers of things and are used for counting things. Whole numbers are all the counting numbers including zero. These are some examples of whole numbers.

• Five (5) chillies.

• Seventy-six (76) points in an AFL football game.

• 90 072 (ninety thousand and seventy-two) people – the number of people at the MCG at a Grand Final.

• 26 million people – the population of Australia.

In mathematics, integers are whole numbers including positive and negative numbers and zero. The opposite numbers to positive whole numbers are called negative whole numbers.