Probability Crossword Puzzle

Print a criss-cross vocabulary crossword for a probability unit: chance words, coins and dice, events, counting and history.

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Probability Crossword

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Answer key: Probability Crossword

1F2CERTAINI3TR4EE5L6IKELYVMEP7RAND8OM9ODDSTUST10SAMPLESPACEIOBML11SPINNER12HEADS

Across 2 CERTAIN · 3 TREE · 5 LIKELY · 7 RANDOM · 9 ODDS · 10 SAMPLESPACE · 11 SPINNER · 12 HEADS

Down 1 FAIR · 4 EVENT · 6 IMPOSSIBLE · 8 OUTCOME

Next step Find probability words in a word searchPrint the math crossword

All 126 clues

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Chance From 0 to 1 24

  • Always How often one die shows a number under 7
  • Certain Sure: one die showing a number from 1 to 6 is this
  • Decimal 0.25 is this way of writing a 1 in 4 chance
  • Fifty Said twice with a hyphen, it means an even split
  • Forecast A 40% chance of rain is part of one
  • Fraction 1/6 is one, and it is the chance of a 4 on a die
  • Impossible A roll of 7 on one ordinary die is this
  • Likely Having more than a 50% chance
  • Luck Good or bad fortune that no one planned
  • Maybe Answer that is neither yes nor no
  • Middle Where 1/2 sits on a line from 0 to 1
  • Never How often a 9 comes up on one ordinary die
  • Odds "3 to 2 against" is one way to state them
  • Percent A 0.5 chance is 50 ___
  • Probable Apt to happen, though not sure to
  • Quarter One ___: chance of calling two coin flips in a row correctly
  • Rare Said of a result with a very small chance
  • Ratio Wanted results compared with all results, as one number over another
  • Scale Number line from 0 to 1 for ranking how sure things are
  • Sixth One ___: chance of a 5 on an ordinary die
  • Slim A ___ chance is a small one
  • Tenth One ___: a 10% chance, said in words
  • Third One ___: chance of drawing the lone red ball out of 3
  • Zero Chance of pulling a red ball from a bag that holds only blue ones

Coins, Dice, Cards and Spinners 26

  • Court ___ cards: the ones with pictures of people
  • Cube Shape of a traditional die
  • Doubles Two dice that land on matching numbers
  • Edge The thin surface between the two sides of a coin
  • Fair Said of a coin with a 1/2 chance of each side
  • Heads Coin side that often shows a portrait
  • Hearts The red cards that are not diamonds
  • Joker Card that often plays wild and belongs to none of the four kinds
  • King One of 4 in a deck, so the chance of drawing one is 1/13
  • Loaded Said of a die tampered with so one number lands up more
  • Opposite On a die the 1 is ___ the 6, and the two add to 7
  • Pair Two cards of matching rank
  • Penny One-cent coin, handy for a flip
  • Pips The dots on a die
  • Pointer Arrow that turns at the center of a color wheel
  • Sector One wedge of a round game wheel, widest at the rim
  • Seven Sum that two dice make most often: 6 ways out of 36
  • Shuffle Mix a deck so the cards come in no known sequence
  • Spades The black cards that are not clubs
  • Spinner Its arrow whirls and stops on a color
  • Suit Clubs or diamonds, for example
  • Tails The reverse of a coin, in a call before a flip
  • Thirteen Cards of each of the 4 kinds in a 52-card deck
  • Twelve Number of flat sides on a die shaped like a dodecahedron
  • Twenty Number of flat sides on a die shaped like an icosahedron
  • Urn Vase of colored balls in classic chance problems

Outcomes and Events 25

  • Biased Said of a coin whose two sides do not each have a 1/2 chance
  • Braces Symbols { and } that fence in a set
  • Complement "Not rolling a 6" is this of "rolling a 6"
  • Compound Made of two or more steps, like a flip and then a roll
  • Conditional Kind of probability worked out once something else is known
  • Dependent Two draws are this when the first card stays out of the deck
  • Disjoint Sets that share nothing: {1, 2} and {5, 6} are this
  • Element The 3 in {1, 2, 3} is one ___ of that set
  • Empty The ___ set, written { }, has no members
  • Event "The card is red" is one: 26 results fit it
  • Exclusive Mutually ___: said of a 2 and a 5 on the same roll of one die
  • Exhaustive Said of a list that leaves no possible result out
  • Failure In a yes-or-no test, the label for the result not being counted
  • Favorable Said of the results that count as a win for you
  • Independent Two coin flips are this: one tells nothing about the next
  • Intersection For {2, 4, 6} and {4, 5, 6} it is {4, 6}
  • Occur Happen, in the language of math books
  • Outcome A 4 is one when a die is rolled; so is a 5
  • Overlap The lens-shaped region where two set circles cross
  • Random With no pattern anyone could foresee
  • Replace Put a drawn marble back before drawing again
  • Sample space For one roll of a die: {1, 2, 3, 4, 5, 6}
  • Subset A set that lies wholly inside another
  • Success In a yes-or-no test, the label for the result being counted
  • Union "A or B" as a set: everything in at least one of the two

Counting and Experiments 26

  • Arrange Line things up; three books allow 6 ways to do it
  • Average For 2, 4 and 6 it is 4
  • Branch One arm of a diagram that forks at each choice
  • Choose "5 ___ 2" is 10, the number of duos that can be made from 5 things
  • Combination A selection where sequence does not count: {A, B} is the same as {B, A}
  • Converge Draw closer and closer, as the mean of many tries does to the true figure
  • Eight Number of results for three coin flips: 2 × 2 × 2
  • Empirical Kind of probability drawn from what really happened
  • Estimate 0.6 is one of the true chance, after 12 wins in 20 tries
  • Expected The ___ value of one die roll is 3.5
  • Experiment Flipping a coin 50 times and writing down each landing is one
  • Factorial 5 × 4 × 3 × 2 × 1 is the ___ of 5, written 5!
  • Frequency The count written beside each result after 50 tries
  • Grid 6 by 6 chart that shows all 36 results for two dice
  • Long run Over the ___ ___, the share of each result settles near its true chance
  • Multiply Do this to 3 shirts and 4 pants to count the outfits
  • Order It matters in a locker code and not in a fruit salad
  • Permutation One lineup of things in a row: ABC is a different one from CAB
  • Predict Name the result before the coin lands
  • Product 12 is this of 3 and 4
  • Simulate Act out a chance process, say on a computer, to study it
  • Tally Keep score with one short line for each result
  • Theoretical Kind of probability reasoned out before anything is flipped
  • Thirty-six Number of results for two dice: 6 × 6
  • Tree Diagram that forks once for each choice
  • Trial One flip, one roll or one spin

People and Ideas 25

  • Axiom A rule that a whole theory is built on, taken as true at the outset
  • Bayes English minister whose rule revises a chance when new evidence comes in
  • Bell Shape the normal curve is nicknamed for
  • Bernoulli Jacob ___, who wrote Ars Conjectandi, printed in 1713
  • Birthday The ___ problem: 23 people give a better than 50% chance of a match
  • Cardano Italian whose Book on Games of Chance was not printed until 1663
  • Century The seventeenth ___: when the math of chance took shape
  • De Moivre Author of The Doctrine of Chances, an early textbook
  • Fallacy Gambler's ___: the belief that a coin is "due" after a streak
  • Fermat Lawyer of Toulouse who wrote about chance by mail in 1654
  • France Where Toulouse is: one founder of the field practiced law there
  • Huygens Dutchman whose 1657 work on reckoning in dice play was an early text on chance
  • Kolmogorov Russian who gave probability its modern foundations in 1933
  • Laplace He issued his analytic theory of probabilities in 1812
  • Latin Language of Ars Conjectandi, "The Art of Conjecturing"
  • Letters What two thinkers traded in 1654 to settle a puzzle about a game
  • Paradox A true result that seems wrong at first glance
  • Pascal French prodigy, born in 1623, who took up the puzzle of an unfinished game
  • Pegs Beads bounce off rows of these on a Galton board
  • Points Problem of ___: how to share the prize of a game cut short
  • Proof The argument a mathematician writes so that no doubt is left
  • Stakes What players put up at the start, and what a game cut short must divide
  • Theorem What a conjecture becomes once someone proves it
  • Triangle Shape of the number pattern where each entry is the sum of the two above it
  • Venn John ___, English logician known for circle diagrams

How this list was compiled: Clues written for this site for math classes from grade 6 to grade 12. Definitions, names and dates were checked against English Wikipedia (CC BY-SA 4.0) in October 2026, and the arithmetic in the worked clues was done twice. Card and dice clues are counting problems: no casino game is named and no clue is advice about betting. Licence: own work

How it works

This probability crossword puzzle is printable on Letter or A4, answer key included. The first puzzle has 12 basic words, among them Outcome, Event, Sample space, Fair, Odds, Likely, Certain and Impossible, most of them clued by an example.

Read the full guide

Five sets after the basics

Chance From 0 to 1 has Percent, Ratio, Forecast and Sixth. Coins, Dice, Cards and Spinners has Pips, Suit, Urn and Thirteen. Outcomes and Events has Complement, Independent, Disjoint and Union. Counting and Experiments has Factorial, Permutation, Combination and Thirty-six. People and Ideas has Pascal, Fermat, Bayes and Kolmogorov.

Clues that are small problems

Seven is the sum two dice make most often, 6 ways out of 36. Quarter is the chance of calling two coin flips in a row. A pupil who fills the square has done the math.

  • Hand out a die with Coins, Dice, Cards and Spinners: pupils can see for themselves that the 1 is opposite the 6.

Questions and answers

What grade is the probability crossword for?

Probability Basics suits grades 6 to 8, when chance is first written as a number from 0 to 1. Counting and Experiments and People and Ideas suit grades 8 to 12. These bands are our judgment, not a published standard.

Does the probability crossword puzzle have an answer key?

Yes. Each print ends with the key on a separate sheet: the solved grid and the answers in clue order. Nothing to pay and no account.

What is the difference between an outcome and an event?

An outcome is one possible result of an experiment, such as a 4 on a die. An event is a set of outcomes, such as every even number. Both words are in the basics set.

What is the difference between a permutation and a combination?

In a permutation the order counts, so ABC and CAB are two different ones. In a combination it does not: {A, B} and {B, A} are the same selection. Both are answers in Counting and Experiments.

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