This number line shows how this works for decimals between 1.6 and 1.7. A place value chart can be really helpful when rounding decimals. They help you see the value of each digit within a number.

In ascending order (smallest to greatest) the numbers are: You can use a number line to order decimals too. This number line is split into tenths and has the numbers 0.6, 0.4, and 0.9 labelled on it.