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MS. KUNDROT 6 TH GRADE MATH Solving Fraction Word Problems Using Multiplication & Division
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MS. KUNDROT 6 T H GRADE MATH
Solving Fraction Word Problems Using Multiplication & Division
What you will learn…
How to solve real-world problems involving multiplication & division of fractions.
How to analyze problems
Distinguish when to multiply vs. divide
How to apply skills to REAL LIFE!!
How do we solve?
Sam’s Doughnut Shop sold 1/3 as many chocolate doughnuts as cinnamon doughnuts. If they sold 1/5 of a tray of cinnamon doughnuts, how many trays of chocolate doughnuts did they sell?
We Use Multiplication!
Do NOT be intimidated by fractions..
Solve the word problem by breaking it down.
BUCK
ox the Question.
nderline the Info Needed ircle Vocabulary
nock out UN-needed Info
Sam’s Doughnut Shop sold 1/3 as many chocolate doughnuts as cinnamon doughnuts. If they sold 1/5 of a tray of cinnamon doughnuts, how many trays of chocolate doughnuts did they sell?
Now set up the Equation and Solve.
15
13
115They sold 1/15 of a tray of
chocolate doughnuts!
How do we solve?
A recipe calls for 1/3 cup of sugar per serving.
How many cups of sugar are needed to make 10 servings?
13
101
103
Convert to a Mixed
Number
313 Cups of Sugar are
Needed
A. 1/4B. 3/7C. 1/5D. 2/9
Your Turn!
At Wacky’s Arcade, 1/2 of the games are racing games. Among the racing games, 2/5 are motorcycle-racing games. What fraction of the games at Wacky's Arcade are motorcycle-racing games?
Great Job!!!
Additional Instruction
Still having trouble? Let’s check out this Kahn Academy video…
Activity
Move into Your Groups of Four.Let’s Play Jeopardy!
Word Problems
Maxine made 5/8 of a quart of hot chocolate.Each mug holds 1/8 of a quart. How many mugs will she be able to fill?SET UP
EQUATION &DIVIDE!5
818
58
408
81
Keep
Reduce…
5 Mugs!
Flip Change
ACTIVITY-Think Pair Share
A factory uses 3/10 of a barrel of raisins in each batch of cookies. Yesterday, the factory used 3/5 of a barrel of raisins. How many batches of cookies did the factory make yesterday?
35
3103
5103
1
1 1
2
2
KeepFlipChange
Reduce to Solve
Batches of Cookies!
Write Equation:
Sources
Kahn Academy. (Aug 7, 2010). Multiplying Fractions Word Problem, U02_L2_T1_we4. Retrieved from http://www.khanacademy.org/video?v=YJgIGwTysk0
Kahn Academy. (Aug 7, 2010). Dividing Fractions Word Problem U02_L2_T3_we5. Retrieved from http://www.khanacademy.org/video?v=PQsgXNggV7Q
