Vocabulary
Per Cent means Per " _____?"
100
Write 80% as a fraction in simplest form & as a decimal.
4/5
0.80
Estimate 48% of 101.
50
A counter is chosen randomly from this picture (P1).
Find the probability of P(4)
P(4)= 1/10
Make an organized list to show the sample space to show all the possible outcomes for:
pants or shorts, and a red, yellow, or blue shirt.
PR, PY, PB
SR, SY, SB
Explain the difference between a population and a sample. Give one example.
A population is an entire group, such as Pollard School students.
A sample is a smaller part of that group, for example, Grade 5 and Grade 10.
Write 7/20 as a percent.
Write 125% as a decimal.
35%
1.25
Find 30% of 90.
0.3 x 90 =27
One ball is chosen randomly from the bag in this picture (P2).
Explain how likely or unlikely it is to draw:
green,
yellow, or
yellow or orange or purple.
Green is unlikely. P = 2/10 or 1/5
Yellow is equally likely/unlikely. P = 5/10 or 1/2
Yellow/Orange/Green is very likely. P =8/10 or 4/5
Look at the picture of spinners (S1)- If each spinner is spun once, what is P(blue, green) in that order?
1/12
In a bag, there are 4 green balls, 2 blue balls, and 6 yellow balls. If you were to choose 1 ball randomly, what are the possible outcomes?
green ball, blue ball, yellow ball
Write a decimal between 0.5 and 0.75.
Then, write it as a fraction in simplest form and a percent.
3/5 or 60%
Find 125% of 60
1.25 x 60 = 75
Look at the graph (P3)- If a student is selected randomly, what is the probability that he or she rides their bike to school?
88/435
Use a tree diagram to find out how many different sandwiches can be made from a choice between:
white or wheat bread,
ham, turkey, or beef,
and cheese, lettuce, or tomato
18 possible combinations
A sample space, such as an organized list or a tree diagram, is used to show all of the ________ _______
Possible Outcomes
Order 2 & 1/4, 0.6, 2.75, 40%, and 7/5 from greatest to least.
2.75 > 2.25 > 1.4 > 0.6 > 0.4
14 is what percent of 70?
20%
A survey found that 6 out of every 10 students at a school has a pet.
1. What is the probability that a student at the school has a pet?
2. If there are 250 students in the school, how many would you predict to have pets?
1. 6/10, or 3/5 or 60%
2. 150 students with pets