Definitions/Rules
The bottom number of a fraction
What is denominator
If you are dividing a whole number by a fraction you must first do what to the whole number?
Put a 1 underneath it to make it a fraction.
1/2 ÷ 4
1/8
What time does school start at Intermediate School?
What is 8:07am
A grocery store sells apples in 2/5 lbs bags. Mrs. S. bought 4 lbs of apples for a school experiment. How many bags did she buy?
What is 10 bags?
4 ÷ 2/5 =
4/1 * 5/2 = 20/2 = 10/1 = 10
The top number of a fraction
What is the numerator
When dividing fractions, what do you do to the first fraction in the problem?
KEEP it the same.
3 ÷ 1/3
9
What is the name of the principal at Roosevelt?
There is 1/3 gallon of water in a 3-gallon container. What fraction of the container is filled?
What is 1/9 of the container?
? * 3 = 1/3
1/3 ÷ 3 =?
1/3 * 1/3 = 1/9
The three steps used when dividing fractions?
What is stay, Change, flip
When dividing fractions, what do you do to the division sign?
Change it to multiplication.
1/3 ÷ 4
1/12
5/9 ÷ 1/2 - Simplest Form
10/9 = 1 1/9
The area of a rectangle is 14 1/2 cm2 and one side is 4 1/2 cm. How long is the other side?
What is 3 2/9cm?
14 1/2 ÷ 4 1/2 =
29/2 ÷ 9/2 =
29/2 * 2/9 = 29/9
This is what you do to a mixed number when dividing fractions.
Multiply the denominator with the whole number and then add the numerator.
When dividing fractions, what must you do to the second fraction in the problem?
Find its reciprocal or flip it
2 ÷ 1/4
8
Vanessa had 61 pixie sticks that she wants to make last 10 days. How much can she eat each day so that they'll last her 10 days? Between what two whole numbers does your answer lie?
6 1/10 days (between 6 and 7)
A triangle has a base of 3 2/5 inches and an area of 5 1/10 sq inches. What is the height of the triangle?
What is 3 inches?
1/2 * (3 2/5) * h = 5 1/10
5 1/10 ÷ (1/2 * 3 2/5) = h
5 1/10 ÷ 17/10 = h
51/10 * 10/17 = 3
What is the correct term when you "Flip" a number in dividing? (spelling counts)
What is Reciprocal?
Fractions should always be in this form unless told otherwise: ______.
Simplest form
1/4 ÷ 2
1/8
Put in order the ages of all the inhabitants of the Schmidt house.
Mrs. Schmidt
Mr. Schmidt
Callie
Chase
Archie
A pool is in the shape of a rectangular prism is being filled with water. The length and width of the pool is 24 feet and 15 feet. IF the height of the water is 1 1/3 feet, what is the volume of the water in cubic feet?
What is 480 cubic feet?
lwh=v
24 * 15 * (1 1/3) =
360 * 4/3 = 480