"Or" "And"
Basic Probability
Predictions Using Probabilities
Probabilities in Percent Form
100
What is the probability of getting heads or tails a coin flip?
What is 1?
100
This is the probability, in simplest form, of rolling an even number on a die
What is 1/2?
100
Of 10 people at the park, 4 really like the new playground. Use the information to predict how many out of 100 people would really like the new playground.
40 out of 100 people
100
This percent represents the probability of rolling a 3 on a ten-sided die.
What is 10%?
200
What is the probability of getting tails in a coin flip and rolling an even number on a 6 sided die.
What is 1/4?
200
You and four friends order food at a restaurant. This is the probability that your food will be served first.
What is 1/5?
200
If 12 people out of 50 saw the new movie with Reese Witherspoon, how many people out of 1,000 would you expect to see the movie?
240
200
On a spinner with blue, yellow, green, and red sections, this percent represents the probability of spinning blue.
What is 25%
300
What is the probability of spinning a green or yellow?
What is 3/8?
300
This is the probability, in simplest form, of rolling greater than 2 on a ten-sided die numbered 1-10.
What is 4/5?
300
If 14 of 40 students are interested in participating in athletics, how many out of 420 would you expect to be interested in athletics?
The ratio 14/60 is equal to the ratio x/420; where x equals the number of students your would expect to be interested in athletics. Solve the ratio and you get the answer!
98 students would be interesting in athletics
300
This percent represents the probability of not spinning orange on a spinner with yellow, green, orange, and red sections.
What is 75%
400
What is the probability of spinning red on the spinner and rolling a 5 on a six sided die.
What is theoretical 2/48 or 1/24?
400
A bag has seven Snickers and three Milky Way bars. This the probability of pulling out a Snickers?
What is 7/10?
400
For every 75 light bulbs produced at a factory, 2 are defective. In a box of 300 light bulbs, how many would likely be defective?
Ratio 2/75 = x/300
Solve the ratio and you get 8 defective light bulbs.
400
This percent represents the probability of drawing a green marble from a bag with 9 green and 11 black marbles.
What is 45%
500
What is the probability of flipping heads on a coin, rolling a number greater than 3 on a die, and spinning a brown on this spinner.
What is 0?
500
The letters A through I are placed in a bag. This is the probability of drawing D.
What is 1/9?
500
At the school carnival, Jesse won the balloon dart game 1 out of every 5 times he played. If he plays another 15 times, about how many times can he expect to win?
3
500
This percent represents the probability of rolling a 7 on a standard die
What is 0%?