Name: 
 

Lesson 2 - Theoretical Probability



 
Richard has a bag that contains 20 coloured marbles. He pulls a marble out of the bag and then returns the marble back into the bag.

            grp001-1.jpg      grp001-2.jpg
Match each colour with the theoretical probability of pulling that colour out of the bag.
a.
grp001-3.jpg
f.
grp001-8.jpg
b.
grp001-4.jpg
g.
grp001-9.jpg
c.
grp001-5.jpg
h.
grp001-10.jpg
d.
grp001-6.jpg
i.
grp001-11.jpg
e.
grp001-7.jpg
j.
grp001-12.jpg
 

 1. 

red
 

 2. 

blue
 

 3. 

yellow
 

 4. 

purple
 

 5. 

green
 

 6. 

orange
 

 7. 

Maria has a spinner that is divided in to 5 equal sections. Each section is a different colour.
                             mc007-1.jpg
What is the theoretical probability of spinning a yellow?
a.
mc007-2.jpg
b.
mc007-3.jpg
c.
1
d.
mc007-4.jpg
 

 8. 

Ty has a spinner that is divided into 5 equal sections where 3 sections are yellow and 2 sections are red.
                              mc008-1.jpg
What is the theoretical probability of spinning a yellow?
a.
mc008-2.jpg
b.
3
c.
mc008-3.jpg
d.
mc008-4.jpg
 

 9. 

Lisa rolls a die.
What is the probability that she rolls an even number?
mc009-1.jpg
a.
mc009-2.jpg
b.
mc009-3.jpg
c.
3
d.
mc009-4.jpg
 

 10. 

Suppose you pick one of the ten linking cubes from a box.

                                mc010-1.jpg

Which outcome has the greatest theoretical probability?
a.
picking a blue cube
c.
picking a green cube
b.
picking a red cube
d.
picking a yellow cube
 



 
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