Simple Probability
Stacy is playing a board game. The probability that she will pass go on her next turn is 1/3. Which statement describes the probability that Stacy will pass go on her next turn?
Unlikely
Convert 3/8 to a decimal.
0.375
What is the probability of rolling a 1 on a dice and then rolling a 4?
1/6 x 1/6 = 1/36
How many total outfits can I make if I have 3 shirts, 3, pants, and 2 pairs of shoes?
3x3x2= 18
The letters in the word SOCCER are put into a bag and drawn randomly. What is the probability of choosing a vowel?
2/6 = 1/3
What is the theoretical probability of rolling a 2 or a 4 on a dice?
2/6 = 1/3
Johnny puts each letter of his name on a piece of paper. What is the probability that he will draw a J and a Y with replacement?
JOHNNY
1/36
What is the probability of flipping tails on a coin and then rolling a 1 or 2 on a dice?
1/2 x 2/6 = 2/12 = 1/6
The probability of rolling a dice and landing on 2 is 1/6. Predict the amount of times the dice would land on 2 if the dice was rolled 600 times.
100 times
The chance of it raining today is 50%. Which of the following simulations best matches the situation ?
a) Rolling a dice and landing on 2.
b) Flipping a coin and landing on heads.
c) Spinning a 1, 2 or 3 on a spinner labeled 1-3.
d) Rolling a number less than 6 on a dice.
b) Flipping a coin and landing on heads.
You flipped a coin 50 times. The coin landed on heads 18 times. What is the experimental probability that you flip a head on your next flip?
18/50 = 9/25
Convert 2/7 into a decimal and a percent. (round to the nearest hundredth)
0.29 = 29%
What is the probability of choosing a girl from our class and then choosing a boy?
TBD
How many total outcomes are there if I spin a dice and flip a coin?
6 x 2 = 12
A target has red, blue, and green sections. Dr. Conway threw at the target 12 times and got the results shown below. Determine the experimental probability of Dr. Conway throwing at the blue region.
Green - 2
Red - 4
Blue - 6
6/12 = 1/2
A bag of marbles contains 6 red marbles, 4 blue marbles, and 5 green marbles. If you randomly draw a marble out of the bag, what is the probability that you select a red marble?
Write your answer as a fraction and a percent.
2/5 = 40%
Convert 36% into a decimal and a fraction in simplest form.
0.36 = 9/25
What is the probability that a dice will land on an odd number and a spinner with red, green, and blue sections will land on blue?
1/6
A spinner is divided into 4 equal sections labeled A, B, C and D. How many possible outcomes are there if the spinner is spun 3 times?
4x4x4 = 64 possible outcomes
A coin is flipped 10 times. Which of the following experimental results are most consistent with the theoretical probability.
a) 1 head and 9 tails
b) 2 heads and 8 tails
c) 3 heads and 7 tails
d) 4 heads and 6 tails
You are creating an experiment for your class with red, yellow, and purple marbles in a bag. You want the probability of drawing a red marble to be 1/2; the probability of drawing a yellow marble to be 1/3; and the probability of drawing a purple marble to be 1/6.
If you want a total of 360 marbles in the bag, how many of each marble should you put?
180 red
120 yellow
60 purple
Ms. Whitaker is faster than 65% of the 7th-grade students, what is this percent as a fraction in simplest form?
13/20
What is the probability a dice will land on a number greater than 2 and a spinner with blue, green, and red sections will land on green?
2/9
A coin is tossed 3 times. How many total outcomes are possible?
2x2x2= 8
You roll a dice twice. Find the following probability:
P(even, and then odd)
1/4