Ordering numbers and place value

Ordering numbers and place value

1. 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

2. 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

3. 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