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When ordering decimals, the first step is to always make sure that the decimals have the same number of decimal places.
e.g. Put the following decimals in ascending order:
0.4 , 0.21 , 0.401 , 0.32 , 0.61
The longest decimal here has three decimal places so we need to convert them all to have three decimal places.
We do this by adding zeros onto the end of any which have less than 3 numbers after the decimal place, as below:
0.400 , 0.210 , 0.401 , 0.320 , 0.610
We can then simply read the numbers as we would normal numbers, and put them in order:
0.210 , 0.320 , 0.400 , 0.401 , 0.610
The final answer should always use the same numbers as the original question, so we need to take off all the zeros which we added, leaving us with:
0.21 , 0.32 , 0.4 , 0.401 , 0.61
In this activity, you will order groups of decimal numbers into either ascending or descending order and locate numbers in specific positions in the resulting sequences.
Now let's attempt some questions together!