8th Grade Math Jeopardy

Number, operations, and Quantitative Reasonin

100

A side of Ari’s aquarium is a square with an area of 190 square inches. The number of inches of each side of between these two whole numbers —

What is 13 and 14

200

Mr. Hines paid $8.40 for an international phone call. He paid a fee of $1.25 plus $0.55 per minute. This is an equation can be used to find x, the length of the call in minutes?

What is 0.55x + 1.25 = 8.40

DAILY DOUBLE

300

Fred pays the same amount of property tax each month. His total property tax for the year is $1,545. This is his monthly tax payment in dollars and cents?

What is $128.75

400

Lucy reads 450 words in 3 minutes. This is an equation that can be used to find w, the number of words Lucy can read in 20 minutes if she continues to read at the same rate?

What is w = (450/3)*20

500

A hydrogen molecule is 1.5x10¯¹º meters in length. This is that number in standard notation?

What is 0.00000000015

Patterns, Relationships, & Algebraic Thinking

100

A store’s records showed that during a one-month period, 3 gallons of milk were sold for every 2 boxes of cereal sold. If 2,864 boxes of cereal were sold that month, this is the number of gallons of milk that were sold?

What is 4,296 gal

200

Caroline used the following formula to determine t, the sales tax on p, the dollar amount of a customer’s total purchase at the candle shop where Caroline works. t = 0.0825p A customer bought a box of red candles for $15 and 2 scented candles for $20 each. This is the sales tax on the customer’s purchase (rounded to the nearest cent)?

What is $4.54

300

Ashley's mother bought some bottles of juice for her family. The juice was on sale for 3 bottles for $4.50. This is how much Ashley's mother spent for 8 bottles of juice?

What is $12

400

This is an equation that matches the following statement. Six less than four times a number is two more than three times that number.

What is 4n - 6 = 3n + 2

500

This is the 7th term of the following sequence? -4,-6,-8,.....-2n-2,...........

What is -16

Squares and Cubes

100

4^3

64

200

sqrt 100

10

300

3root 125

5

400

3root 343

7

500

Simplify ((6^4) x (6^6))

6^10

Linear Equations

100

What is the slope of this equation?:

y=-5x+3

-5

200

What is the y-intercept of this equation?:

y=-5x+3

+3

300

Is this equation proportional or non-proportional:

y=-5x+3

non

400

If a line passes through the origin, which equation would represent it? (Slope intercept or Constant of Proportionality)

Proportionality

500

A game of bowling costs $2 per game, with a mandatory $0.50 shoe rental. Write an equation to represent the cost of bowling. 

y=2x+0.5

Probability and Statistics

100

A random survey of 75 eighth graders at Cedar Middle School showed that 37 of them do volunteer work. This is the approximate number of students who do volunteer work out of the 500 eighth graders at the school.

What is 247 ?

200

A school committee conducted a survey to find out whether teachers would prefer to start the school day 30 minutes later. Only teachers with children in preschool were surveyed. This is the reason why the results of this survey might NOT be a valid representation of what all the teachers at the school would prefer?

What is "The survey was not conducted using a random sample of teachers."

300

Mr. Williams bought three raffle tickets at a marching band fund-raiser. He finds out how many tickets were sold and calculates that his theoretical probability of winning is 1 in 150. This is the number of that tickets were sold?

What is 450 ?

400

At the Grand Lakes Basketball Tournament, 4 basketball games are played in 4 different gymnasiums at the same time. If all 4 games begin with a coin toss, this is the probability that all 4 coins will be heads?

What is one out of sixteen

500

During the past winter, the Bender family had monthly heating bills of $79, $146, $212, $149, and $212. This is the mean, meadian, mode, and range.

What are... Range: $133, Mode: $212 Median: $149 Mean: $159.60