Fifth Math Jeopardy

Common Denominators

100

Find equivalent fractions for the fraction set below by finding a common denominator. 

2/5, 1/3

6/15, 5/15

200

Find equivalent fractions for the fraction set below by finding a common denominator. 

3/7, 1/2

6/14, 7/14

300

Find equivalent fractions for the fraction set below by finding a common denominator. 

5/6, 8/21

35/42, 16/42

30/126, 48/126

400

Sally made a pan of brownies and partitioned them into thirds.  Jason partitioned a pan of brownies of the same size into fourths. If they combined their pans, how many equal-sized brownies would there be in one pan? 

There would be twelve brownies of equal size in the pan. 

500

For keeping business records, every three months of a year is called a quarter.  How many months are equal to three-quarters of a year? Show how you got your answer.

9 months

Estimating Fraction Sums and Differences

100

Estimate the sum or difference by replacing the fraction with a 0, 1/2, or 1. 

11/18 - 2/9

1/2

200

Estimate the sum or difference by replacing the fraction with a 0, 1/2, or 1. 

31/36 + 4/10

1 1/2

300

Estimate the sum or difference by replacing the fraction with a 0, 1/2, or 1. 

37/40 - 26/50

1/2

400

Katie made a bag of trail mix with 1/2 cup of raisins, 3/5 cup of banana chips, and 3/8 cup of peanuts.  About how much trail mix did Katie make?

About 1 1/2 cups.

500

Steve is making breakfast.  The recipes call for 7/8 cup of milk for grits and 3/4 cup for biscuits.  He only has 2 cups of milk. Does he have enough to make his breakfast? Explain.

Yes 

Simplifying Fractions

100

Simplify the following fraction to its lowest form. 

6/8

3/4

200

Simplify the following fraction to its lowest form. 

9/15

3/5

300

Simplify the following fraction to its lowest form. 

6/24

1/4

400

Simplify the following fraction to its lowest form. 

24/96

1/4

500

Simplify the following fraction to its lowest form. 

35/91

5/13

Dividing Decimals

100

Divide the following problem.

2.16 ÷ 4

0.54

200

Divide the following problem.

1.76 ÷ 8

0.22

300

Divide the following problem.

4.75 ÷ 0.25 

19

400

Divide the following problem.

1.92 ÷ 2.4

0.8

500

A group of 5 friends bought a bag of apples to share equally.  If the bag of apples weighs 11.25 pounds, how much is each person's share?

2.25 pounds

Multiplying Decimals

100

Find each product.

0.33 x 0.8

0.264

200

Find each product.

11.1 x 0.28

3.108

300

Find each product.

23.4 x 5.8

135.72

400

A newly hatched alligator is 0.5 feet long. An adult alligator is 16.4 times as long. How many feet longer is the adult alligator than the newborn alligator?

7.7 feet

500

Bradley walks 0.65 miles each Friday to his friend's house. He takes a different route home which is 1.2 miles. How many miles will Bradley walk to his friend's house and back in a year? 

96.2 miles