When we multiply decimals, we multiply the digits the same way we would whole numbers. When we get the product, we count the number of digits in the problem that are behind a decimal point; this will be the number of decimal places in the answer. If we do not have enough spaces, we replace them with zeros.
For instance, if we multiply two numbers that are each in the hundredths place, we will have 2+2 = 4 decimal numbers in our answer. If our answer gives us only 3 digits, we place a zero in front and then place the decimal.
recycling the right things in the right places - for example, receipts cannot be recycled, and if they are out into paper recycling then this can often cause problems and a whole batch of paper to be recycled can be ruined. this means that a whole bunch of stuff has to go to waste.