Probability Jeopardy

Coins, dice, spinners, and marbles: a probability review for 7th grade math. The board is free to copy, and students buzz in from their phones.

6 categories · 30 clues · Final Jeopardy · everyone buzzes in from their phone

For the classroom

Copies all 30 clues into an editor of your own. Free, no account needed.

Every clue on this board

This page is public, so anyone can read the answers — copy the board and swap a few clues before game day.

Likely or Unlikely

$200
An event that is certain to happen has a probability of this number.
What is 1?
$400
Rolling a 7 on a standard six-sided die is this kind of event.
What is impossible?
$600
An event with a probability of 0.03 is described by this word.
What is unlikely?
$800
The event that something does not happen is called this of the event.
What is the complement?
$1,000
If the probability of rain tomorrow is 0.35, this is the probability that it does not rain.
What is 0.65?

Coins and Dice

$200
This is the probability of a fair coin landing heads up.
What is 1/2?
$400
This is the probability of rolling a 6 on a standard six-sided die.
What is 1/6?
$600
This is the probability, in simplest form, of rolling a number less than 5 on a standard six-sided die.
What is 2/3?
$800
This is the probability of getting heads on both of two fair coins flipped together.
What is 1/4?
$1,000
This is the probability of rolling a sum of 12 with two standard six-sided dice.
What is 1/36?

Spinners and Marbles

$200
With 5 equal sections and one of them red, this is the probability that a spinner lands on red.
What is 1/5?
$400
From a bag of 3 red and 7 blue marbles, this is the probability of drawing a red one, as a decimal.
What is 0.3?
$600
From a bag of 2 red, 3 green and 5 yellow marbles, this is the probability of drawing yellow, as a percent.
What is 50 percent?
$800
On a spinner with 8 equal sections numbered 1 to 8, this is the probability of landing on a number greater than 5.
What is 3/8?
$1,000
Drawing two marbles without replacement from a bag of 4 red and 6 blue, this is the probability both are red.
What is 2/15?

Compound Events

$200
Events where the outcome of one does not affect the other, like two coin flips, are called this.
What are independent events?
$400
Events where the first outcome changes the chances of the second, like drawing without replacing, are called this.
What are dependent events?
$600
To find the probability that two independent events both happen, you use this operation on their probabilities.
What is multiplication?
$800
This is the probability of flipping heads on a coin and rolling a 4 on a standard die.
What is 1/12?
$1,000
This is the probability of flipping a fair coin three times and getting heads every time.
What is 1/8?

Tree Diagrams and Outcomes

$200
Flipping two coins, one after the other, has this many possible outcomes.
What is 4?
$400
The set of all possible outcomes of an experiment is called this.
What is the sample space?
$600
A T-shirt that comes in 3 colors and 4 sizes offers this many different color-and-size choices.
What is 12?
$800
This rule says to multiply the number of choices at each step to count all possible outcomes.
What is the Fundamental Counting Principle?
$1,000
A lunch deal with 2 soups, 5 sandwiches and 3 drinks, choosing one of each, makes this many different meals possible.
What is 30?

Experimental Probability

$200
Probability based on what should happen in theory, not on actual results, is called this.
What is theoretical probability?
$400
Each time you repeat an experiment, like one flip of a coin, is called this.
What is a trial?
$600
If a coin flipped 50 times lands heads 20 times, this is the experimental probability of heads, as a decimal.
What is 0.4?
$800
A basketball player who makes 18 of 24 free throws has this experimental probability of making a shot, as a percent.
What is 75 percent?
$1,000
This principle says that the more trials you run, the closer your results get to the expected probability.
What is the law of large numbers?

Final Jeopardy — Roll the Die

This is the probability, in simplest form, of rolling a number greater than 4 on a standard six-sided die.

What is one-third?

How to run this board

This board moves from words to numbers: describing events as impossible, unlikely, or certain, writing simple probabilities as fractions, working with coins, dice, spinners, and bags of marbles, finding compound probabilities with tree diagrams, and comparing what should happen with what actually happens in an experiment.

Put a pair of dice and a coin on each table. When a clue asks for a probability, the team that buzzes has to answer before the roll, and then the class rolls to see what really happens. It is a quick, repeated lesson that theoretical and experimental results do not always match.

Ask for answers in simplest form, and decide before you start whether a decimal or percent also counts.

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