Prime factors

The prime factors of a number are the factors which are also prime numbers. They can be found by using a factor tree.

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Square numbers

Continue to work with square numbers up to 20 squared. Try to learn all these. Square roots.

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Revise multiples, factors and prime numbers

Reminder: the factors of a number are those numbers that divide exactly into it, without leaving a remainder. A number which only has factors of 1 and itself is called a prime number.

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Square and cube numbers

More on square and cube numbers. You may have noticed that cube numbers start getting pretty big, pretty quickly.

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Prime factors

Prime factors

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