One dime is ten cents. 7.30 is 730 pennies, and a penny is only one cent. Therefore, in order to turn those into dimes, we must divide those pennies into groups of ten. Each group will equal one dime. This is mathemetically represented by 730 divided by 10 (730 / 10), or 73. From this, we can see that there are 73 groups of 10 pennies, or 73 dimes.
