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A way of writing a number as $A\times10^n$ , where $1\leq A<10$ and is an integer.

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

Check that the final coefficient satisfies $1 \leq A < 10$ . For example, $15\times10^6$ is not yet in standard form.

Standard form gives a compact way to write very large and very small numbers.

A way of writing a positive number as $A\times10^n$ , where $1\leq A<10$ and $n$ is an integer.

Standard form is a compact way to write very large or very small positive numbers.

A way of writing very large or very small numbers as $a\times10^n$ , where $1\leq a<10$ and $n$ is an integer.

An expression can have the correct value without being written in standard form.

A way of writing a non-zero number as $a\times10^n$ , where $1\leq |a|<10$ and $n$ is an integer.

Read the required form carefully: an answer may be requested in standard form or as an ordinary number.

Check both conditions before accepting an answer as standard form: it must use multiplication by a power of 10, and its coefficient must satisfy $1\leq A<10$ .

Standard form

Definition

How each exam board covers it

AQA GCSE Mathematics · 8300

Exam tips

Revise Mathematics with GradeGen

Edexcel GCSE Mathematics · 1MA1

OCR GCSE Mathematics · J560