See BIDMAS

A number which only has two factors: 1 and itself.

Bigger than 0.

The whole group of people or objects you are interested in when conducting a questionnaire or survey.

A straight-sided 2D shape.

Example: Triangle, Square, …

To mark on a graph with a cross.

The value each position a digit has in a number.

Example:  Hundreds, Tens and Units. 

Two lines which meet at right angles.

Example:

🔑 Key Perpendicular Topics: 
👀Also Look Up:

The distance around the outside of a shape.

Working out the percentage an amount has increased or decreased by.