We use a decimal point to separate units (ones) from parts of a whole, such as tenths, hundredths, thousandths, etc. \({0.1}\) is a tenth, \(\frac{1}{10}\), of a one ...

Place value is not only important for whole numbers ... For decimals, we focus on the columns tenths, hundredths and thousandths. By combing the two, ‘in-between’ numbers can be shown.