 Converting numbers to and from Standard Form

Mind Map by , created over 6 years ago

GCSE Maths (Year 8 Number 2) Mind Map on Converting numbers to and from Standard Form, created by Ellen Billingham on 05/09/2013. 211 0 0  Created by Ellen Billingham over 6 years ago
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Converting numbers to and from Standard Form
1 What is standard form?
1.1 Standard form is an accurate and simple way of writing very large and very small numbers using powers of 10
2 Examples:
2.1 400 = 4 x 100 = 4 x 10²
2.2 45,300 = 4.53 x 10,000 = 4.53 x 10^4
2.3 0.03 = 3 x 0.01 = 3 x 10^-2
3 Reversing Standard Form
3.1 2.3 x 10^6 = 2.3 x 1,000,000 = 2,300,000
4 Top tips!
4.1 With small numbers, the power of ten is "-(however many decimal places there are)"
4.2 WIth big numbers, the power of ten is the number of digits after the first one
4.3 With problems that involve having to change the multiplier, if you move its decimal place to the left, ADD THE POWER!!
4.3.1 And to the right, SUBTRACT THE POWER!!!
4.4 READ THE QUESTIONS!
5 The multipliers always have to be numbers between 1 and 10