jeopardy multiplying fractions dividing fractions multiplying decimals dividing decimals...

JeopardyMultiplyingFractions

Dividing Fractions

MultiplyingDecimals

Dividing Decimals

Misconceptions & Error Patterns

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Final Jeopardy

$100 Question from H1

What is one fourth of one half?

$100 Answer from H1

One eighth

$200 Question from H1

A recipe needs one fourth of a tablespoon of salt. How much salt does 8 recipes need?

$200 Answer from H1

2 tablespoons

$300 Question from H1

Peter’s truck gets him 10 2/3 milesPer gallon. Suppose Peter’s tank isEmpty and he puts 5 ½ gallons in it, How far can Peter go with the truck?

$300 Answer from H1

58 2/3 miles

$400 Question from H1

Band practice lasted 1 1/4 hours. Two thirds of the time was spent marching. How much time was spent marching?

$400 Answer from H1

5/6 of an hour

$500 Question from H1

When the notary public asked Elizabeth her age, Elizabeth answered, "I am twice as old as my sister Amy. Amy is one-sixth as old as my father. My father is ninety years old." How old is Elizabeth?

$500 Answer from H1

30 years old

$100 Question from H2

7/19  ÷  3/10

$100 Answer from H2

1 13/57

$200 Question from H2

Each camper's water bottle holds 3/10 of a gallon of water. There are 2 7/10 gallons of water in the cabin's water tank. How many water bottles can be filled with the water in the tank?

$200 Answer from H2

9 water bottles

$300 Question from H2

Renee wants to buy 7 1/4 cups of almonds. There are 3 5/8 cups of almonds in each package. How many packages of almonds should Renee buy?

$300 Answer from H2

2 packages

$400 Question from H2

Your Text Here

$400 Answer from H2

Your Text Here

$500 Question from H2Kaitlyn found a recipe for a Mothering Cake in an old book at the library. In England during the 1600s, servants often made a Mothering Cake when they were allowed to visit their mothers on Mothering Sunday. The recipe for one small cake calls for one and one-fourth cups of sugar. Kaitlyn would like to make three cakes for Mother's Day. How many cups of sugar will she need to make all of the cakes?

$500 Answer from H2

3 ¾ cups

$100 Question from H3

3.5x 7.4

$100 Answer from H3

25.9

$200 Question from H3

Eric's cow is very fragile, but she still gives about 15.6 gallons of milk a day. How many gallons does she give in one hundred seven days?

$200 Answer from H3

1669.2 gallons

$300 Question from H3

It was my fault that we arrived at the musical later than we had expected. I had to stop to get gas. I put eight gallons of gas in my car. Each gallon cost me $1.79. How much did I spend on gas?

$300 Answer from H3

$14.32

$400 Question from H3

Kyle sold popcorn boxes to raise money for the class trip. He wanted to transform himself into the top salesman in his class. He sold six boxes at $3.16 per box, nine boxes at $3.66 per box, and twelve boxes at $6.50 per box. What was his sales total?

$400 Answer from H3

$129.90

$500 Question from H3

Clarita's sister works in an American company in Amarillo, Texas. She works forty-one hours every week and is paid $11.22 per hour. She sends half of her weekly salary to Clarita totake care of their mother. How much money does Clarita's sister send home each week?

$500 Answer from H3

$230.01

$100 Question from H4

Tony has 5.8 kg of coffee. He will put them in 8 bags. How much will be in each bag?

$100 Answer from H4

Tony will put 0.725 kg of coffee in each bag.

$200 Question from H4

Gerry makes $7.58 an hour. He grossed $306.99 last week. How many hours did he work?

$200 Answer from H4

$40.50

$300 Question from H4

The beach is beginning to erode near the lighthouse. The lighthouse is only seventy-one feet from the water now. If the beach erodes at the rate of 2.6 feet per year, how many years will it be, rounded to the nearest year, before the water reaches the lighthouse?

$300 Answer from H4

27 years

$400 Question from H4

My bottle of medicine contains 21.5 ounces. I take 1.75 ounces each dose. How many doses are in the bottle?

$400 Answer from H4

About 1312 will be accepted

$500 Question from H4

Your The winning Football team received $958,394.31. This money was split among 29 players and the coach. The players got 1 share each and and the coach got 0.875 shares, how much would one share be worth?

$500 Answer from H4

$32,080.14

Hint: Divide the total amount by 29.875 shares.

$100 Question from H5

2/3 x 3= 6/9

What error pattern is this studentUsing?

$100 Answer from H5

“They have multiplied the numerator and denominator by the same number,” Ashlock, (2010).

$200 Question from H5

6/10 ÷ 2/4 = 3/2

What error pattern does this show?

$200 Answer from H5

“The student divides across the top and thenacross the bottom. They are not concernedwith remainders,” Ashlock, (2010).

$300 Question from H5

6.7 X 3 2.01What error pattern is shown here?

$300 Answer from H5

“The student places the decimal pointby counting over from the left insteadof from the right in the product”, Ashlock, (2010).

$400 Question from H5

3.916|23.5 18 55 54 1

What error pattern is shown here?

$400 Answer from H5

“This student write the remainder as anExtension of the quotient,” Ashlock, (2010).

$500 Question from H5

What is the most popular misconception amongstudents when dividing and multiplying fractions and decimals?

$500 Answer from H5

All multiplication problems make bigger productsand all division problems make smaller quotients.

Final Jeopardy

How could you model multiplication of fractions using a number line?

Final Jeopardy Answer

ResourcesAshlock, B. A. (2010). Error patterns in computation: Using error patterns to help each student learn. Boston: Pearson.