Probability

Name : Rayhan Class : 5C
A
Put these words in the correct place on top of the probability line:- Certain, Impossible,
likely, unlikely, evens.
Impossible
0%
Unlikely
25%
Evens Chance
50%
Likely
Certain
75%
100%
Put these numbers, in the correct place, on the probability line:50%, 75%, 25%, 100% and 0%
Remember that chance is always expressed as a fraction, percentage or decimal between 0 and 1. E.g. ¼,
0.25 or 25% are all ways of saying there is one chance in 4.
What is the probability of landing on each number on
the spinner?
1 = 12, 5%
2 = 12, 5%
3 = 37, 5%
5 = 12, 5%
6 = 12, 5%
What number are you most likely to land on?
What are the chances of landing on an even number?
What is the probability of landing on each number on
the spinner?
1 = 37, 5%
2 = 25%
3 = 25%
4 = 12, 5%
What number are you least likely to land on?
Number 1
What are the chances of landing on an odd number?
Number 1
On a single dice what are the chances of rolling…
a 6?
an even number?
Extension (think very carefully about these):
On a pair of dice what are the chances of scoring the following?
1=
25%
6=
12 =
13 =
25%
25%
0%
B
Probability
Write whether each event is certain, likely, unlikely, or impossible.
1. The following coins are put in a bag:
Describe the probability of picking a nickel.
75%
3. * This is a pre-made sheet.
Use the link at the top of the page for a
printable page.
2. The following coins are put in a bag:
Describe the probability of picking a dime.
25%
4. A number from the following list is chosen
at random: 93, 74, 7, 3, 81, and 9. Describe
the probability of picking an even number.
14, 5%
5. The following coins are put in a bag:
Describe the probability of picking a dime.
6. A glass jar contains a total of 37 marbles.
The jar has red and blue marbles. There are
8 blue marbles. Describe the probability of
picking a red marble.
75%
25%
7. A glass jar contains a total of 31 marbles.
8. A glass jar contains 27 yellow marbles.
The jar has red and yellow marbles. There
Describe the probability of picking a
are 23 red marbles. Describe the probability
yellow marble.
of picking a yellow marble.
100%
30%
9. A glass jar contains 29 purple marbles.
Describe the probability of picking a red
marble.
0%
10. A glass jar contains a total of 26 marbles.
The jar has yellow and blue marbles.
There are 5 blue marbles. Describe the
probability of picking a blue marble.
25%
C
1) A dice is rolled once. What is the probability of getting number 5?
Answer: 14, 5%
2) In a math class, there are 3 girls and 5 boys. The teacher asks a volunteer to come to the
board. What is the probability that the student is a girl?
Answer: 37, 5%
3) A dice is rolled once. What is the probability of getting an even number?
Answer: 43, 5%
4) A dice is rolled once. What is the probability of getting a two, a six, or a nine?
Answer: 29%
5) What is the probability that the spinner in the picture stops on blue or yellow?
Answer: 40%
6) A dice is rolled once. What is the probability of not getting number 2?
Answer: 14, 5%
7) A vase has 4 yellow flowers, 4 red flowers, and 8 blue flowers. Donna took a flower, smelled
it, and returned it to the vase.
What are the odds that the first flower was red and the second flower was blue?
Answer: Red: 4/16
Blue: 8/16
8) Two number cubes are rolled. What are the odds that one cube will show at least 5 and the
other number cube will show a multiple of 3?
Answer: 5: 12, 5%
multiple of 3: 25%
9) What are the odds that the spinner in this picture stops on green or red?
Answer: Green: 0%
Red: 20%
10) A dice is rolled and a coin is tossed. What is the probability of getting seven and tails?
Answer: Seven: 0%
Tails: 50%
D. Write the probability.
1. If one letter is chosen at random from the
word possess, what is the probability that
the letter chosen is the letter "s"?
4 out of 7
2. A number cube has 6 sides. The sides are
numbered 1 to 6. If the cube is thrown
once, what is the probability of rolling the
number 6?
1 out of 6
3. A bag contains 4 yellow marbles, 10 blue
marbles, 12 purple marbles, 7 red marbles,
and 11 green marbles. What is the
probability of pulling out a yellow or a
green marble?
4. A number cube has 6 sides. The sides have
the numbers 6, 7, 3, 3, 6, and 2. If the cube
is thrown once, what is the probability of
rolling an even number?
3 out of 6
15 out of 44
5. If one letter is chosen at random from the
word businessmen, what is the probability
that the letter chosen is the letter "e"?
6. * This is a pre-made sheet.
Use the link at the top of the page for a
printable page.
2 out of 11
7. A number cube has 6 sides. The sides have 8. If one letter is chosen at random from the
the numbers 5, 4, 9, 5, 5, and 5. If the cube
word beaded, what is the probability that
is thrown once, what is the probability of
the letter chosen is the letter "e"?
rolling the number 9 or the number 5?
2 out of 6
4out of 6
9. A bag contains 2 red marbles, 11 yellow
marbles, 6 blue marbles, 3 green marbles,
and 13 purple marbles. What is the
probability of pulling out a blue marble?
10. If one letter is chosen at random from the
word prism, what is the probability that
the letter chosen is the letter "i"?
1 out of 5
6 out of 35
11. A number cube has 6 sides. The sides
12. If one letter is chosen at random from the
have the numbers 2, 6, 7, 2, 3, and 8. If the
word palate, what is the probability that
cube is thrown once, what is the
the letter chosen is the letter "a"?
probability of rolling the number 6 or the
2 out of 6
number 2?
3 out of 6
13. A number cube has 6 sides. The sides
14. A number cube has 6 sides. The sides are
have the numbers 6, 5, 6, 7, 6, and 1. If the
numbered 1 to 6. If the cube is thrown
cube is thrown once, what is the
probability of rolling the number 7 or the
number 6?
4 out of 6
once, what is the probability of rolling the
number 2?
1 out of 6