Mathematics
8th -
9th grade
Probability
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- 1. Slide
Probability
prepared by
Mr. Air Jaworski G. Obligar
- 2. Slide
Learning Outcomes
define probability and other related important terms
identify outcomes and types of events
use probability to express the chance of an event occurring
apply probability in real life scenarios
- 3. Slide
What is Probability
Probability is how likely something is to happen. You might also hear it called chance.
Probability can be expressed as fractions, decimals or percentages, or on a probability scale.
- 4. Slide
Probability Scales
Certain - if an event will always happen.
Most Likely - if an event has a good chance of happening.
Even Chance - if an event has an equally likely of happening.
Less Likely - if an event has a poor chance of happening
Impossible - if an event will never happen or has no chance of happening
- 5. Slide
Identifying the outcomes
Event A: The sun will rise from east everyday.
Event B: Your friend will win the lottery today with one ticket.
Event C: You obtain a "tail" when you toss a coin.
Event D: It will snow in North Jakarta, Indonesia at least once a year.
Event E: You will not get "1" when you roll a die.
- 6. Multiple-choicePlease save your changes before editing any questions.1 minute1 pt
Anaiah has a spinner. (Refer to the image)
What is her chance of getting an odd number?
Certain
Most Likely
Even Chance
Less Likely
Impossible
- 7. Multiple-choicePlease save your changes before editing any questions.1 minute1 pt
Argo has a deck of cards.
What is the probability that he will pick a number card?
Certain
Most Likely
Even Chance
Less Likely
Impossible
- 8. Multiple-choicePlease save your changes before editing any questions.1 minute1 pt
There are marbles hidden in a bag. (Refer to the image)
Aidan pulls out one marble without looking.
Which kind of marble is Aidan most likely to pull out?
Striped
Spotty
Grey
White
- 11. Multiple-choicePlease save your changes before editing any questions.1 minute1 pt
A box contains 2 red balls and 5 blue balls. Aura picks one ball from the box without looking.
What is the probability that Aura will pick a red ball?
- 12. Multiple-choicePlease save your changes before editing any questions.1 minute1 pt
Airel rolls a die.
What is the probability that Airel rolls an even number? - 14. Multiple-choicePlease save your changes before editing any questions.1 minute1 pt
A box contains 50 marbles of which 8 are yellow, 10 are green, 16 are red and the remaining are blue.
A marble is drawn from the box at random. Find the percent of the probability that the marble drawn is green.
16%
20%
32%
10%
- 15. Multiple-choicePlease save your changes before editing any questions.1 minute1 pt
A box contains 50 marbles of which 8 are yellow, 10 are green, 16 are red and the remaining are blue.
A marble is drawn from the box at random. Find the percent of the probability that the marble drawn is blue.
16%
20%
32%
10%
- 16. Multiple-choicePlease save your changes before editing any questions.1 minute1 pt
A box contains 50 marbles of which 8 are yellow, 10 are green, 16 are red and the remaining are blue.
A marble is drawn from the box at random. Find the percent of the probability that the marble drawn is not orange.
0%
16%
32%
100%
- 17. Slide
Group Activity
A single card is drawn from a 52- standard deck of cards. Find the probability of getting a card that is:
(a) a diamond
(b) a heart picture card
(c) not a joker
(d) a club King or a heart Jack
(e) NOT a black “five”
- 18. Slide
- 20. Slide
