Lesson 10, Topic 1
In Progress

Calculations Involving Standard Form

Lesson Progress
0% Complete

A number is said to be in standard form if the number is expressed in the form

A × 10n

Where A is a number between 1 and 10.

This is often written as 1 < A < 10 n is an integer (Positive or Negative)

In standard form, power of 10 (i.e. 10n) is often used.

Examples of positive powers of 10 are:

1 = 100

100 = 102

1000 = 103 etc.

Examples of negative powers of 10

10-1 = $$\frac{1}{10} \scriptsize \: or \: 0.1$$

10-2  = $$\frac{1}{100} \scriptsize \: or \: 0.01$$

10-3  =$$\normalsize \frac{1}{1000} \scriptsize \: or \: \normalsize \frac{1}{10^3} \scriptsize = 0.001$$

Hence 3500000 can be written in standard form as 3.5 × 106

Similarly, the number 0.00000067 can be written as 6.7 × 10-7

error: