Standard form

A way of writing a number as $a \times 10^n$ , where $1 \leq a < 10$ and is an integer.

A way of writing a number as $a \times 10^n$ , where $1 \leq a < 10$ and is an integer, which may be positive, zero or negative.

In standard form, the first number must be at least 1 but less than 10. A negative power of ten represents a small number, not a negative value.

In standard form, the first number must be at least 1 but less than 10. Check that converting back gives the original number.

Standard form changes how a number is written, not its value or its unit.

A way of writing a number as $a\times10^n$ , where $1\leq a<10$ and $n$ is an integer exponent, which may be positive, zero or negative.

Standard form changes how the number is written, not its value.

Definition