Multiplying Fractions
Find the product. Draw a model to explain your thinking:
2/3 x 1/5 =
2/15 + Teacher check model
5 divided by 1/3 =
15 + Teacher check model
Solve:
1.3 x 2
2.6
12 ÷ 0.03
0.36
Solve:
1.5 x 0.32
0.48
Find the product. Draw a model to explain your thinking:
1/2 of 4/5 =
4/10 = 2/5 + teacher check model
Find the quotient. Draw a model to explain your thinking :
1/4 divided by 3
1/12 + teacher check model
Solve:
4.36 x 3.1
13.516
8.5 / 3.4
2.5
It takes half of a yard of ribbon to make a bow. How many bows can be made with 5 yards of ribbon?
10 bows
Identify the error and describe it:
8 x 2/3 = 16/24
They multiplied both the 2 and the 3 by 8. Only the 2 should be multiplied by 8.
Identify the error and explain:
1/4 divided by 5 = 5/4 = 1 1/4
They multiplied 1/4 by 5 instead of doing the KFC model. Answer = 1/20
Solve:
32.4 x 5.88
190.512
4.25 / 0.25
17
Convert to minutes:
4 hours and 46 minutes
286 minutes
Sammy’s pizza is 4/5 covered with vegetable toppings. 1/3 of the vegetables are olives. What fraction of the pizza is covered in olives?
4/15 of the pizza is covered in olives
Write a MODEL & EXPRESSION. Then Solve :
Mark and Jada share 5 yards of ribbon equally. How much ribbon will each get?
Expression 5/2
= 2 1/2 yards each + Teacher check model
Benjamin bought 12 goldfish. Each goldfish cost $0.98. How much did Benjamin spend?
$11.76
Christy paid 52.32 aed for 6 large milkshakes. How much was each milkshake?
8.72 aed
A castle has to be guarded 24 hours a day. Five knights are ordered to split each day’s guard duty equally. How long will each knight spend on guard duty in one day? Record it in hours
4.8 hours or 4 4/5 hours
Jackson claims that multiplication always makes a number bigger. He gave the following examples:
If I take 6, and I multiply it by 4, I get 24, which is bigger than 6.
If I take 14, and I multiply it by 2 (a whole number), I get 24, or 12, which is bigger than 14.
Jackson’s reasoning is incorrect. Give an example that proves he is wrong and explain.
Teacher Check
Jill collected a total of 19 gallons of honey. If Jill distributes all of the honey equally between 9 jars, how much honey will be in each jar? Express your answer as a mixed number.
19/9 = 2 1/9 gallons per jar
Dave pays $1.75 for a school lunch on days when he doesn't bring his own lunch to school. One week he bought a school lunch on Monday, Wednesday, Thursday, and Friday. How much did he spend on school lunches that week?
1.75 x 4 = $7
Jessie went to the candy shop and bought 22.8 pounds of candies. She divided the candies equally and packed them in boxes. If each box of candies weighed 3.8 pounds, how many boxes did Jessie use to pack the candies?
6 boxes
What division problem can be solved using the following multiplication problem:
12 × 5 ?
Explain your thinking.
12 divided by 1/5