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Expanded notation

A way of writing a number that shows the place value of every digit

order of operations

The rules for calculating a maths question containing mixed operations, such as 14 - 2 x 4 + 12

place value

The way that the position of a digit in a number tells us its value

Place value chart

When we write numbers, each column has a special value

factor

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

Prime number

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

Index notation

Using powers to write the repeated multiplication (eg: 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3) of a number

Divisibility test

Cheats for testing whether a number can be divided by 2, 3, 4, 5, 6, 7, 8, 9 and 10

origin

The centre point of a number line (ground floor of a hotel, freezing point on a thermometer)

multiple

Answers to the Times Tables (eg: Multiples of 3 are: 3, 6, 9, 12, 15 etc.)

10 Family

This refers to the amount of zeros in a number. We DIVIDE to the left and MUL-TI-PLY-I-I to the right