Ordering Whole Numbers-

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How to order decimals

Look at the direction that you need to order in, ascending or descending.
   Place in ascending order   9.8  1.2  6.1  13.0  4.5  

If ascending look for the smallest number first, by comparing the first digit of each number.
   So the smallest number is 1.2

  - If you have more than one number starting with the same digit, you then need to compare the next set of digits in those numbers  ie-   1.5  1.2 would become 1.2  1.5

   So you now have 1.2 followed by 4.5, repeat this process until all the numbers are used.

  So the ascending order is    1.2  4.5  6.1  9.8  13.0

If descending look for the largest number first, by comparing the first digit of each number.
   So the largest number is 13.0

  - If you have more than one number starting with the same digit, you then need to compare the next set of digits in those numbers ie-    1.5  1.2 would stay as 1.5  1.2 as 0.5 is larger than 0.2 in descending order.

   So you now have 13.0 followed by 9.8, repeat this process until all the numbers are used.

  So the descending order is    13.0  9.8  6.1  4.5  1.2

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Year 5 Maths
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