ms. kundrot 6 th grade math solving fraction word problems using multiplication & division

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

EXAMPLE

TAKE NOTES as you watch this VIDEO!

Click Here

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