When students multiply two decimals, they first multiply as if there is no decimal. They find the product and add the decimal point at the appropriate place in it. Students build on this idea to find the missing number in decimal multiplication in multiply tenths less than 1 and hundredths worksheet. This worksheet is about practicing with the horizontal format in which numbers are written side by side. To develop flexibility with numbers and operations, students need to have enough practice in this format and not just rely on the vertical/column method.