You can use place value headings, like ones ... When two digits are used, for example in the number 54, the digit 4 still represents ones, but the digit 5 represents 5 tens, which is 50.

Place value is not only important for whole numbers ... By combing the two, ‘in-between’ numbers can be shown. For example, we can say that the number 6.7 (‘six point seven’) is in ...