Ordering numbers and place value - created from Mind Map

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Always look at big numbers In groups of 3

Putting numbers in Oder of size

Addition / subtraction and decimals

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

Depending on which way you are going increase or decrease

For decimals we do the same first bit

If you are increasing you start from small to big so you start with the 2 digit numbers and you go up

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

Line up the units and the columns so you don't get mixed up

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

Then add the column starting on the right and then to the left

Then you carry over any spare numbers when you are adding