Simplify: Grouping and combining similar terms

Substitute: replace one variable with a number or new variable. 

Equivalent: Having the same value  

Coefficient: A number used to multiply a variable. 

Product: the result of a multiplication

Expression: Numbers, symbols and operators (such as + and x) grouped together that show the value of something.

Equation: An equation says that two things are equal. It will have an equal sign =.

Formula: A formula is a mathematical rule or relationship that uses letters to represent amounts which can be changed. 

Expand: Expand is when we multiply to remove the bracket. 

Factorise: Finding what to multiply to get an expression.