Key learning points

1. The base could be a number, letter or combination of the two.
2. The laws are another way you can simplify an expression.
3. Plotting numbers against their squared values can help you estimate unknown amounts.

Keywords

• Power - An alternative word for exponent or index. Used when reading exponents above 3. E.g. 2^4 is read as “2 to the power of 4”.

• Vinculum - Vinculum is the horizontal line placed over an expression to show that everything below that line is one group.

Common misconception