Probability Test
Name: ____________
Knowledge
1. Use the words likely, unlikely, impossible, possible or certain to describe each event.
A)
B)
C)
D)
You will be in school this afternoon.
On your way home you will meet a talking cat.
We will have a fire drill today.
The sun will rise tomorrow.
____________
____________
____________
____________
2.
R = red
O = orange
Y = yellow
B = blue
A)
B)
C)
D)
E)
F)
G)
What colour is the spinner most likely to land on? _______
What colour is the spinner least likely to land on? _______
What colour is it impossible for the spinner to land on? ________
What is the theoretical probability the spinner will land on red (use a fraction)? ____
What is the theoretical probability a coin flipped will land on heads? ____
What is the theoretical probability a die rolled will land on a 1 or a 2? ____
If the probability of something is ¼; what does the 4 (denominator) represent?
______________________
H) If the probability of something is ¼; what does the 1 (numerator) represent?
______________________
Knowledge
/12 Level _____
Thinking
1. Draw a spinner where:
A) The most likely colour spun will be red.
B) The least likely colour spun will be yellow.
C) Green and blue are equally likely to be spun.
T ____
2. Your friend is about to roll two dice. She asks you to predict what number she will
roll. What number would you choose and why?
T ____ C ____
3. A bag contains 5 red marbles and 5 yellow marbles. If I add two more yellow
marbles and two more red marbles, have I changed the probability that I will pull
out a red marble when I reach into the bag?
T ____ C ____
Thinking ____ Communication ____
Application
1. You are standing with 2 of your friends. All 3 of you have a coin. You flip the three
coins into the air. What is the theoretical probability that all the coins will all land
on heads?
C ____ A ____
2. At Mr. W’s Ice Cream Emporium, you can buy the Sundae Surprise! You get to
choose one ice cream flavour, one sauce, and one topping.
Ice cream flavour
Vanilla
Chocolate
Strawberry
Sauce
Topping
Hot Fudge
Butterscotch
Peanuts
Maraschino Cherry
Whip-Cream
Mr. W is making random Sundaes for the weekend fun-run. What is the probability
the sundae you get will have a Whip-Cream topping?
C ____ A ____
Communication _____ Application _____
K:
T:
C:
A: