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## Ignore words

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factor

A number that divides evenly into another number. 3 is a factor of 15 (look at the chart!)

Natural Number

a counting number from one to infinity.

divisibility

sharing or grouping a number into equal parts.

even number

number that is divisible by 2.

odd number

is a number that can NOT be divided evenly into groups of two

Prime number

A number that can only be divided by 1 and itself. The numbers left at the bottom of the tree

Composite number

a number with more than two factors.

highest common factor (HCF)

the biggest number that will divide two or more other numbers exactly

multiplies

a mathematical operation where a number is added to itself a number of times

lowest common multiple

the smallest number that is the multiple of two or more other numbers.