 Sometimes we need to use our times tables to solve more difficult calculations quickly. The rectangle cupboard measures 0.8m by 0.9m. What is the area of the floor of the cupboard? To find the area of the cupboard, we will need to use our times tables. 0.8 multiplied by 0.9. Let's make this sum easier. 8 multiplied by 9 equals 72. Notice that we have kept the numbers the same, but changed the size. We have made the 0.8 and 0.9 10 times bigger as we have moved the decimal point once per number, so twice in total. We need to be aware that there is a decimal point that is not normally written when we have whole numbers. The 8 is actually 8.0 and 9 is actually 9.0. 8 multiplied by 9 equals 72. All we have to do now is move the decimal point back to decimal spaces. 0.8 multiplied by 0.9 equals 0.72m2. So the area of the floor of the cupboard is 0.72m2.