Standard Form

Standard form is used to represent either very large or very small numbers. Calculators normally have a function to use standard form. However, you must understand how it works on your calculator to use it.

Standard form is given in the form: a ? 10^N
Where a is a number 1 upto, but not including 10, and N is any integer. Exam papers would normally include a question which includes standard form. It is important that these are answered correctly as above.

Examples:
40 = 4 ? 10¹ = 4 ? 10
500 = 5 ? 10²
0.0005 = 5 ? 10^-4
1553.158 = 1.553158 ? 10³

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Revision notes by Richard Tang