Write Standard Form Numbers as Ordinary Numbers

Using standard form is incredibly useful when we need to use either very large or very small numbers.

Other areas we may use standard form includes science. From measuring the distance between stars or the mass of atoms.

Remember:

1,000 = 10³

100 = 10²

10 = 10¹

1 = 100

0.1 = 10^-1

0.01 = 10^-2

0.001 = 10^-3

Examples

5.1 × 10² as an ordinary number is

5.1 × 100 = 510

3.214 × 10 ^-4 as an ordinary number is

3.214 x 0.0001 = 3.214 ÷ 1,000 = 0.003214

Let's try some questions now.