How many tenths in the whole number of 7.2?

The number 7.2 can be expressed as 72 tenths because the decimal 0.2 represents 2 tenths. Therefore, when you combine the whole number part (7) with the fractional part (0.2), you have 70 tenths from the whole number and 2 tenths from the decimal, resulting in a total of 72 tenths in 7.2.