Mrs.Lam has made 300 ounces of jam. She has jars that each hold 16 ounces. What is the fewest number of jars needed to hold all the jam made?
You have two numbers. Do you think you should
add?
subtract?
multiply?
divide?
Does your answer make sense?
Divide
Right.
What answer did you get?
18.75
How do you use 0.75 of a jar?
Mrs. Lam will use 19 jars.
To find the fewest number of jars needed, we divide the total amount of jam made (300 ounces) by the capacity of each jar (16 ounces).
To do this, divide 300 by 16:
300 รท 16 = 18 remainder 12
The quotient is 18, which means you can fill 18 jars completely. The remainder is 12 ounces, which means you have some jam left after filling the 18 jars.
Since we want to find the fewest number of jars needed, we don't want any jam to go to waste. We need to fill the remaining jam into additional jars, even if it's not enough to completely fill a jar.
In this case, we have 12 ounces left, and the remaining jam cannot completely fill another jar. Therefore, we need to use one additional jar to hold the remaining 12 ounces.
Adding the 18 completely filled jars to the one partially filled jar, the fewest number of jars needed to hold all the jam made is 19 jars.