Key learning points

1. Integer indices state how often a number should be multiplied by itself.
2. The square root of any perfect square will be an integer.
3. The square root of any number can be found using a calculator but it may not be an integer.
4. The square root of any number can be estimated by comparing the square roots of the closest perfect squares.

Common misconception

Keywords

• Indices - An exponent is a number positioned above and to the right of a base value. It indicates repeated multiplication. An alternative word for this is index (plural indices).