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178301
Ordering numbers and place value
Description
Cambridge IGCSE Maths Mind Map on Ordering numbers and place value, created by egreen99 on 26/08/2013.
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maths
maths
cambridge igcse
Mind Map by
egreen99
, updated more than 1 year ago
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Created by
egreen99
about 11 years ago
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Resource summary
Ordering numbers and place value
Always look at big numbers In groups of 3
Always start from the right hand side of the number
Moving left put a space in every 3 digits to break it up into groups of 3
Now going right read each group of 3 and on the first add million and going down from there
Putting numbers in Oder of size
Depending on which way you are going increase or decrease
If you are increasing you start from small to big so you start with the 2 digit numbers and you go up
For decimals we do the same first bit
But then you have to look what is after the point a 0 or a 1
First group the 0 numbers and then group the 1 numbers
Addition / subtraction and decimals
Line up the units and the columns so you don't get mixed up
Then add the column starting on the right and then to the left
Then you carry over any spare numbers when you are adding
You do the same for subtraction but you are taking away
Decimals are the same but you have to add the stuff on the right hand side of the point and the the left
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