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Determine the theoretical probability of a simple event · Grade 6 · D2.2

Name: ______________________

Date: ______________________

1
A bag has 1 purple and 5 red marbles. You pick one without looking. What is P(purple)?
Warm-up
Answer:
2
A bag has 4 purple and 5 red marbles. You pick one without looking. What is P(purple)?
Warm-up
Answer:
3
A bag has 5 yellow and 5 purple marbles. You pick one without looking. What is P(yellow)?
Warm-up
Answer:
4
A spinner has 8 equal sections: 3 yellow, 4 green, and 1 purple. What is P(green)?
On level
Answer:
5
A spinner has 5 equal sections: 3 green, 1 blue, and 1 yellow. What is P(blue)?
On level
Answer:
6
A spinner has 11 equal sections: 3 yellow, 4 blue, and 4 red. What is P(blue)?
On level
Answer:
7
You roll a fair 6-sided number cube. What is the probability of rolling a multiple of 3?
Challenge
Answer:
8
You roll a fair 6-sided number cube. What is the probability of rolling an odd number?
Challenge
Answer:
9
You roll a fair 6-sided number cube. What is the probability of rolling a number greater than 2?
Challenge
Answer:

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Worksheet code: eyJzIjoiZGF0YS1wcm9iYWJpbGl0eS1zaW1wbGUiLCJkIjpbMTE4NjYwNTUzMSw0MTIyODQ3NSw1NDY2ODg3MTIsMjEwMDg2NDQ0Niw5ODAyMTQyMjMsMTA3Nzg2NDQ2MiwxNTM1MDQwNTc3LDE1MzY3NTI1MTIsMTIxOTk0MzMxMl0sInYiOjF9.aeb17cc26e13

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Answer key · Determine the theoretical probability of a simple event

1.
1/6 — There are 1 purple out of 6 marbles, so P(purple) = 1/6.
2.
4/9 — There are 4 purple out of 9 marbles, so P(purple) = 4/9.
3.
5/10 — There are 5 yellow out of 10 marbles, so P(yellow) = 5/10.
4.
4/8 — 4 of the 8 equal sections are green, so P(green) = 4/8.
5.
1/5 — 1 of the 5 equal sections are blue, so P(blue) = 1/5.
6.
4/11 — 4 of the 11 equal sections are blue, so P(blue) = 4/11.
7.
2/6 — 2 of the 6 faces are a multiple of 3 (3, 6), so the probability is 2/6.
8.
3/6 — 3 of the 6 faces are an odd number (1, 3, 5), so the probability is 3/6.
9.
4/6 — 4 of the 6 faces are a number greater than 2 (3, 4, 5, 6), so the probability is 4/6.