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.

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).

Common misconception