Grade 5 · Math · Unit 8 of 11
Probability
Fractions and experiments
What your child practises
Writing probability as a fraction, placing events on a probability line from 0 to 1, and comparing what should happen with what happens in an experiment.
Ontario Curriculum expectation: D2.1, D2.2 · probability as a fraction, the probability line, and theoretical and experimental probability
Sample questions
A taste of this unit. In the app, questions change every time and get easier or harder to match your child.
Question 1
When you do more and more trials, the experimental probability usually…
- turns into 0
- gets closer to the theoretical probability
- gets farther away
Show answer
gets closer to the theoretical probability
Hint: Many trials even out the luck.
Question 2
On a probability line, where does a certain event go?
- 0
- 1
- 1/2
Show answer
1
Hint: Probabilities go from 0 (impossible) to 1 (certain).
Question 3
What is the theoretical probability of rolling an even number on a regular die?
- 2/6
- 3/6
- 1/6
Show answer
3/6
Hint: Even numbers are 2, 4 and 6. That is 3 out of 6.
Question 4
The spinner has equal sections. What is the probability of landing on red?
- 8/10
- 9/10
- 1/10
Show answer
1/10
Hint: Probability = favourable outcomes ÷ all outcomes.
Question 5
A spinner lands on red with probability 1/10. About how many times would you expect red in 40 spins?
answer box
Show answer
4
Hint: Find 1/10 of 40. Divide by 10.
Question 6
The spinner has equal sections. What is the probability of landing on red?
- 5/6
- 3/6
- 1/6
Show answer
5/6
Hint: Probability = favourable outcomes ÷ all outcomes.