Definitions/Rules
The bottom number of a fraction
What is denominator
What are the steps to dividing with fractions?
Keep / Change / Flip
3 divided by 5 - Write as a fraction
Francesca is growing 1/2 an inch each year. How many years will it take for her to grow 6 inches?
12 years
One fourth of a cake was shared equally among 3 people. What fraction of the cake did each person get?
1/12 of a cake
The top number of a fraction
What is the numerator
If you are dividing a whole number by a unit fraction you will end up with what kind of number?
A Whole Number
5 divided by 1/3 =
15
Jim can run 1 mile in 1/4 hour. How far can he run in 4 hours?
16 miles
Tina has 10 packages of yarn to knit a scarf. She uses 1/3 package of yarn for each inch of length she adds to the scarf. If Tina uses all the yarn, how long will her scarf be?
30 inches
How can you write a mixed number as a division expression? (Use fraction vocabulary in your answer)
First, write the mixed number as an improper fraction. Then use the remainder as the dividend and the divisor as the denominator.
When you divide a unit fraction by a whole number, you will end up with what type of number?
A Fraction
1/3 divided by 5 =
1/15
A baker has 12 cups of sugar. He sets aside 3 cups of sugar, and uses the rest for a brownie recipe that calls for 1/3 cup of sugar per batch. How many batches of brownies can the baker make?
27 batches of brownies
Omar is painting a 24 square foot wall. The wall is divided into squares that each measure 1/4 square foot. How many squares is the wall divided into?
96 squares
What generalization can you make about dividing a unit fraction by a whole number? (Use fraction vocabulary)
When dividing fractions, what must you do to the second fraction in the problem?
Find its reciprocal or flip it
5 divided by 3 =
1 2/3
Jane and her 3 friends move 24 boxes. Each friend moved the same amount of boxes. Use an equation and solve to find how many boxes each person moved.
(MUST HAVE BOTH PARTS)
24 divided by 4 = b
b = 6 boxes
Ben has enough frosting to cover a 1/2 square foot cake. He wants to use the icing to cover 2 equal sized cakes. Write an equation and then solve to show the size of each of two cakes that Ben can cover with the icing. (BOTH PARTS)
1/2 divided by 2 = c
c = 1/4 square foot cakes
What is another term for
"Flip" This is the correct term.
Reciprocal
How can you check your answer to when dividing fractions? (Explain)
Fact Family (Multiply)
Take the answer x the divisor to get the dividend.
Does 3 5/7 equal 7 divided by 26? Explain.
No. 3 5/7 = 26/7, not 7/26
Janet has a kitchen with an area of 27 square feet. Janet will be placing 1/4 square foot tiles on the entire floor. If boxes of tiles come 8 to a box, how many boxes of tiles will Janet need? Give equations AND the answer.
27 divided by 1/4 = t
t = 108 tiles
108 divided by 8 = b
13 R4 --> 14 boxes are needed
Brandon has to deliver a message to a friend who lives 14 miles away. He can deliver a message to Jake, who then delivers it to Marissa. Marissa delivers it to Kelly, who then finishes the delivery. Each of the four friends walks the message the same distance. Use an equation and then solve to find out how far each friend travels with the message.
14 divided by 4 = d
d = 3 1/2 miles