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Math 8 and 9 Unit 1: Integers TEST Coming soon!
You know when you go to the store and wonder whether it's better to buy the single can of tuna for $3.45 or the 3 pack for $9.99, or the 5 pack for $17.00? It takes a minute to decide...and sometimes you just go with it... and pay too much
It used to be that if you bought the bigger case it was cheaper than the single cans...but not always. If you can find the price per can, then you can tell which one is the best deal...per can!
This is the "unit price", or price per one unit.
If you say the problem right, it helps you write the math question right...
For the tuna example above, you want to know the price per can (price/can)
so the price goes on the top...and the number of cans goes on the bottom.
Then you divide the top (price) by the bottom (number of cans)
so the bottom number will become 1, and the top will be the price per ONE can.
Example:
The granola bars come in a 6-pack and a 20-pack, but which is the better deal?
we want the price per bar...so price on the top and number of bars on the bottom
6-pack: $4.50/6 $4.50 divided by 6 = $0.75 each
20-pack: $12.00/20 $12 divided by 20 = $0.60 each
In this case, the better deal is still buying the 20 pack at regular price!
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