Mathematics
Grade 4
15 min
Expected values for a game of chance
Expected values for a game of chance
Tutorial Preview
1
A spinner has 2 equal parts. One wins 10¢, one wins 0¢. What is the average prize?
2
A spinner has 4 parts. One wins 12¢, three win 0¢. What is the average prize?
3
A game costs 5¢ to play. The average prize is 8¢. Is it a good deal?
Sample Practice Questions
Easy
You flip a coin. Heads wins 2¢ and tails wins 0¢. What is the average prize?
0.1¢
1.2¢
2.0¢
3.3¢
Easy
A spinner has 2 equal parts. One wins 6¢ and one wins 0¢. What is the average prize?
0.6¢
1.0¢
2.3¢
3.4¢
Easy
A 4-part spinner has one part that wins 4¢. The others win 0¢. What is the average prize?
0.4¢
1.1¢
2.2¢
3.0¢
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