Decimals are a little more complicated to multiply than an outright number. But think of it in terms of dollars and cents. For example, if a father has two kids and he gives each child $2.35 that means that he has given out $4.70. All the decimals below are multiplied with integers, so there should be no change to the position of the decimal point.
Remember not to type in a space into your answers, else they will be marked wrong. Also don't forget to type in the decimal point. After you are done, click on 'Score Me' to find out your score. Repeat until you get 100%.