Interactive Maths Worksheets Developing & Refreshing Your Maths Skills Standard Form (Page 2 of 4) in pdf

Interactive Maths Worksheets Developing & Refreshing Your Maths Skills Standard Form Page 2

Interactive Maths Worksheets

Developing & Refreshing Your Maths Skills

Standard Form

Standard Form (Scientific Notation)

Standard form is a way of expressing large numbers in a more

manageable format. It is very lengthy to keep writing large figures

and there is more margin of error as there is always the risk of

leaving out or adding 0's.

0.0000003067 is easy to misread. Mistakes in a 0 here or there

will make a serious difference. 3.067 is much easier to read but

isn't correct.

Standard form gives a way to write very big and very small

numbers without getting lost in a whole string of 0's.

Numbers in Standard Form

A number conforms to Standard Form Index when it is written as:

a x 10

Where 'a' only has a single digit between 1 and 9 before the decimal

place and 'n' is an integer (a positive or negative whole number, or

These two numbers multiplied together equal the value of the

intended number.

So:

1200 can be written as 1.2 x 10

(1.2 x 1000)

790 can be written as 7.9 x 10

(7.9 x 100)

-2

0.0371 can be written as 3.71 x 10

(3.71 ÷ 100)

Interactive Maths Worksheets Developing & Refreshing Your Maths Skills Standard Form Page 2