Probability
Maria is flipping a coin. What is the probability the coin will land on heads?
What is 1/2, 0.5, or 50%?
Layla flipped a coin 10 times and landed on heads 4 times. What is the probability of landing on heads?
What is 2/5, or 0.4, or 40%?
If you flip a coin 10 times, about how many times should it land on heads?
5
Define "probability."
The chance that an event will occur
How likely is it that a coin is flipped by Madilynn and lands on tails?
Equally likely
The classic wood carousel at Carousel Park in Hampton, VA has 32 horses and 16 of them are standing horses. What is the probability of randomly selecting a standing horse?
What is 1/2, or 0.50, or 50%?
Jason rolled a die twenty times. He landed on 2 five times, 3 seven times, 6 two times, and 5 six times. What is the experimental probability of landing on 6?
1/10, 0.1, or 10%
Alena has a spinner with four equal sections that are blue, red, green, and yellow. If you spin it 100 times, about how many times should you land on yellow?
25 times
Define "experimental probability."
The probability of what actually occurs.
How likely is it that a number cube is tossed and lands on 3?
Unlikely
What is the probability of rolling a number greater than 2 with a standard number cube?
What is 2/3, or 0.66, or 66%?
A letter tile is randomly selected from a bag, recorded, and replaced 100 times. The results are listed below. What is the probability of selecting the letter "E"? A = 16 E = 11 I = 29 O = 19 U = 25
11/100 or 0.11, or 11%
Aidan has 30 marbles in a bag. The probability of choosing a green or blue marble is 1/2. How many marbles are blue or green?
15 blue or green marbles
Define the word fraction?
A fraction has a numerator on top and a denominator on the bottom.
How likely is it that a number cube is tossed and it lands on 8?
never going to happen
There are 4 red marbles, 3 green marbles, and 1 yellow marble in a box. One marble is taken out of the box. What is the probability that the marble is red or yellow?
What is 5/8, 0.625 or 62.5%?
Naraya recorded the types of birds that visit his bird feeder. Based on the results below, what is the probability the next bird will be a chickadee? Woodpecker = 3 Chickadee = 5 Cardinal = 1 Sparrow = 13 Blue Jay = 3
1/5, or 0.20, or 20%
There are 20 students in Olivia's class. If there are 14 girls then what is the probability of choosing a boy?
3/10
Describe the difference between events that are certain, likely, unlikely, or impossible.
Certain would be 100% of the time, likely is anything greater than 50% of the time, unlikely is anything less than 50% of the time, and impossible is anything that has a 0% chance of occuring.
How likely is it that a number cube is tossed by Emily and lands on any number 1-6?
Certain
Mr. Cewe spins a spinner with 5 equal sections numbered 1-5. What is the probability she will spin and land on a even number?
What is 1/2 or 0.5, or 50%?
Delaney has a box, there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither red nor green?
1/3
A die is rolled, find the probability that an even number is obtained
1/2
Define what math is?
Numbers and thinking critically in order to solve the problem.
How likely is it that a number cube lands on 2 and a coin lands on heads?
unlikely