  # Writing Standard Form Numbers as Ordinary Numbers

In this worksheet, students write standard form numbers as ordinary numbers. Key stage:  KS 3

Curriculum topic:   Number

Curriculum subtopic:   Interpret/Compare Standard Form Numbers

Difficulty level:   #### Worksheet Overview

In this worksheet, you must change numbers written in standard form back to ordinary numbers.

Remember       10000 = 104
1000 = 103
100 = 102
10 = 101
1 = 100

 1 10
= 10-1  or
 1 10

 1 100
= 10-2  or
 1 102

 1 1000
= 10-3  or
 1 103

Examples

5.1 × 10as an ordinary number is

5.1 × 10000 = 51000

3.214 × 10 -4 as an ordinary number is

3.214 ×
 1 1000
= 3.214 ÷ 10000 = 0.0003214

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