Counting by grouping

Total value of a digit in a number shows how much is that digit worth.

For example, the total value of each digit in the number 479 651 is as follows:

Write the total value of 9 in 89 670.

Answer

The total value of 9 in 89 670 is 9 000.

A number is in expanded form if it is written as the sum of the total values of its digits. This form identifies the total value of each digit in the number.

Write down the following numerals in expanded form:

(a) 26 713 (b) 41 023 (c) 129 567

Solution