WELL it depends
multiply
divide
You are supposed to divide the total price by the number of pounds. That will give you the price per pound.
To find the unit cost, you divide the total cost by the number of books. If the total cost for 5 books is $60, the unit cost would be $60 divided by 5, which equals $12 per book.
Divide 9.38 by 2.5 to find cost per pound. Divide 2.5 by 9.38 to find mass per unit of currency.
multiply
divide
You have to multiply by the conversation ratio.
To convert from a larger unit to a smaller unit you would multiply. Ex: 5 km = 5000 m Where 1 km = 1000 m <><><><><> It depends on which factor you are multiplying or dividing by. It can go either way. To convert from ounces to grams, for instance, you can divide by 28.350, or you can multiply by 0.035273.
you divide or multiply
You are supposed to divide the total price by the number of pounds. That will give you the price per pound.
Multiply by the reciprocal.
To calculate the weighted average unit cost for a product or service, you multiply the quantity of each item by its cost, add up these values, and then divide by the total quantity. This gives a more accurate average cost considering the different prices of items.
Multiply by the factor for converting the large unit to the small unit or divide by the factor for converting the small unit to the large unit.
You are supposed to divide the distance by the time.
Multiply by 10
Inches are the smaller unit so there will be more of them, thus to convert yards to inches multiply [by 36].