In order of smallest to largest it would be: 0.06, 0.066, 0.6, 0.606.

Ordering decimals can be tricky. Because often we look at 0.42 and 0.402 and say that 0.402 must be bigger because there are more digits. But no!

We can use this method to see which decimals are bigger:

## Set up a table with the decimal point in the same place for each number.

## Put in each number.

## Fill in the empty squares with zeros.

## Compare using the first column on the left

## If the digits are equal move to the next column to the right until one number wins.

If you want ascending order you always pick the smallest first.

If you want descending order you always pick the largest first.

See examples of decimals in ascending and descending order at MathisFun.com.