Ordering numbers from largest to smallest seems to be quite a simple task, but when the numbers are decimals it can prove to be much trickier. One problem lies with the number of digits which the number has. As a rule, with whole numbers, the more digits there are, the bigger the number, and children get used to this idea. But this is not the case with decimals. For example: 1234 is a larger number than 123. But 1.234 is not larger than 12.3. Another factor is the placing of zeros in numbers and many children have problems with recognising that 0.4 is the same as 0.40 or 0.400. An interesting thought is that with a number such as 0.4 it is possible to place an infinite number of zeros before the 0 or after the 4 and the number would maintain the same value eg 0000000.400000000. Those kind people who write the SAT tests for eleven year old children like ordering numbers and questions often come up in the tests. This set of worksheets shows a really good method of ordering them, using a table and I would highly recommend this approach.