Probability Practise

0
Here is part of a number line.
Write the two missing numbers in the boxes.
Probability Practise
a look at the spinner below. Tick ✓ or ✖ for each
9601. Have 980
22
Here is a square spinner.
statement.
9a
1 mark
9b
1 mark
4 is the mostLook
likely
score
☐
at these
statements.
For each one put a tick ( ) if it is correct.
2 and 4 are Put
equally
likely scores ☐
a cross ( ) if it is not correct.
!
Here is a spinner which is a regular octagon.
scores
equally
Write 1, 2 Odd
or 3 inand
eacheven
section
of the are
spinner
so thatlikely
‘4’
is
the
most
likely
score.
1 and 2 are equally likely to come up and
3 is the least 2.
likely to come up.
☐ ‘2’ and ‘4’ are equally likely scores.
„
„
Odd and even scores are equally likely.
22i
A score of ‘3’ or more is as likely as a
score of less than ‘3’.
22ii
2 marks
10i
10ii
2 marks
The numbers 1,2 and 3 have to be inserted into the spinner.
10
18
On the spinner above, insert the numbers 1 and 2 so that
there is an even chance of them being picked and a less
likely chance of 3 being picked out.
3. There are 6 balls, numbered 1-6 in a bag. What is the
chance of drawing out an even numbered ball? Write
your answer as a fraction. __________________________
4. What is the probability that I will draw out the number
5? ____________________
5. What is the probability that I will draw out an odd
numbered ball? ______________________
6. A fair dice is numbered 1 to 6 and is rolled at the start of
a game.
Underline the correct answer:
What is the probability of getting a 6?
2/3
1/6
1/2
3/4
7. What is the probability of getting a 5?
1/3
1/4
1/5
1/6
8. What is the probability of getting a 2 or 3?
1/6
1/3
1/2
2/3
9. A bag contains 4 grey balls and 3 white balls. What is
the probability of picking a white ball?
_________________
10.
What is the probability of picking a grey ball?
________________
11.
Here are two bags.
Each bag has 3 white balls and one black ball in it.
A ball is taken from one of the bags without looking.
What is the probability that it is a black ball?
Give your answer as a fraction________________
12.
All the balls from both bags are now mixed
together in a new bag.
Put a cross (x) on this line to show the probability of
taking a black ball from the new bag.
20
Here are two spinners, P and Q.
13.
Spinner P has 4 equal sections.
Spinner Q has 6 equal sections.
1
1
2
2
6
4
3
3
5
4
Q
P
Here are two spinners. Spinner P has 4 EQUAL sections.
Ben spins the pointer on each spinner.
Spinner Q has 6 Equal sections.
For each statement below, put a tick ( ) if it is correct.
Mark
spins
the
pointer
Put
a cross
( ) if it
is not
correct. on both of the spinners.
Tick the statement if it is correct, or put an x if it is incorrect.
Ben is more likely to score 4
on
spinner
than onlikely
spinnerto
Q. score
Mark
is Pmore
Q
a 4 on Spinner P than on Spinner
☐ The score on spinner P is certain to be less
than the score on spinner Q.
14.
The score on Spinner P is CERTAIN to be less than the score
Ben
is equally likely
to score an even number
on spinner
Q ☐ on spinner P and spinner Q.
20i
A score of less than 3 is equally likely
on spinner P and spinner Q.
20ii
2 marks
15.
Mark is EQUALLY LIKELY to score an even number on
spinner P and spinner Q ☐
9b
1 mark
Answers 1.
10
4 is the most likely score 
Here is a spinner which is a regular octagon.
2 and 4 are equally likely scores 
Write 1, 2 or 3 in each section of the spinner so that
Odd
and
evenlikely
scores
are up
equally
1 and
2 are
equally
to come
and likely 
3 is the least likely to come up.
2.
1
2
2
3
1
3
1
3. 1/2
4. 1/6
5. 1/2
6. 1/6
7. 1/6
10
2
10i
10ii
2 marks
8. 1/3
9. 3/7
10. 4/7
11. 1/4
12.
In this region
13. ✓
14. ✖
15. ✓
Well done, mark your work, complete your corrections and
enter your % into the progress tracker.