Using the guide grid below, place our numbers the 3 corners such that the unit of your number to convert will be canceled out when we divide by the bottom values. Number Conversion Factor To X side with the X Convert unit you want Conversion Factor side with the unit you want to cancel Now do a reality check. Will your kilometers cancel out if they divided or multiplied? Given how you set up the box, will the kilometers cancel out? If you answered no, go back and fix your box. If you answered yes, multiply across the top and divide by each number in the bottom to find out how many miles I need to run to practice for my 5K race. How many miles will I have to run