Pre Algebra Lesson 9 3
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Transcript of Pre Algebra Lesson 9 3
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Simple Probability
Goals: In this lesson, youll find
the probability of simple events.
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5-Minute Check
1. A rectangle has an area of 60 square
inches. If the sides of the rectangle are
whole numbers of inches, how many
different combinations of measures are
possible?
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5-Minute Check
1. A rectangle has an area of 60 square
inches. If the sides of the rectangle are
whole numbers of inches, how many
different combinations of measures are
possible? 6
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5-Minute Check
Draw a square that is divided into 9 equal smaller
squares. Place numbers in each small square so
that the product of each row and column is 60.
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Simple Probability
Examples
1) What is the probability that you will roll a
1or 6 when you roll a number cube?
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Simple Probability
Examples
1) What is the probability that you will roll a
1or 6 when you roll a number cube? 1/3
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Simple Probability
Examples
1) What is the probability that you will roll a
1or 6 when you roll a number cube? 1/3
2) Suppose you must roll a 9 to have a
chance to win a game of Trivial Pursuit.
What is the probability of rolling a 9?
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Simple Probability
Examples
1) What is the probability that you will roll a
1or 6 when you roll a number cube? 1/3
2) Suppose you must roll a 9 to have a
chance to win a game of Trivial Pursuit.
What is the probability of rolling a 9? 1/9
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Simple Probability
3) Find the probability of
each choice of
Scrabble tile.
a. An O if no tiles havebeen chosen.
No. of tiles Letters
1 J,K,Q,X,Z
2 B,C,F,H,M,P,
V,W,Y,Blank
3 G
4 D,L,S,U
6 N,R,T8 O
9 A,I
12 E
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Simple Probability
3) Find the probability of
each choice of
Scrabble tile.
a. An O if no tiles havebeen chosen. 2/25
No. of tiles Letters
1 J,K,Q,X,Z
2 B,C,F,H,M,P,
V,W,Y,Blank
3 G
4 D,L,S,U
6 N,R,T8 O
9 A,I
12 E
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Simple Probability
3) Find the probability of
each choice of
Scrabble tile.
a. An O if no tiles havebeen chosen. 2/25
b. Any vowel if half of
all tiles and half of
all vowels have
been drawn.
No. of tiles Letters
1 J,K,Q,X,Z
2 B,C,F,H,M,P,
V,W,Y,Blank
3 G
4 D,L,S,U
6 N,R,T8 O
9 A,I
12 E
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Simple Probability
3) Find the probability of
each choice of
Scrabble tile.
a. An O if no tiles havebeen chosen. 2/25
b. Any vowel if half of
all tiles and half of
all vowels have
been drawn. 21/50
No. of tiles Letters
1 J,K,Q,X,Z
2 B,C,F,H,M,P,
V,W,Y,Blank
3 G
4 D,L,S,U
6 N,R,T8 O
9 A,I
12 E
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Simple Probability
3) Find the probability ofeach choice ofScrabble tile.
a. An O if no tiles have
been chosen. 2/25b. Any vowel if half of all
tiles and half of allvowels have beendrawn. 21/50
c. A blank if 38 tiles havebeen chosen, includingtwo blanks.
No. of tiles Letters
1 J,K,Q,X,Z
2 B,C,F,H,M,P,
V,W,Y,Blank
3 G
4 D,L,S,U
6 N,R,T8 O
9 A,I
12 E
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Simple Probability
3) Find the probability ofeach choice ofScrabble tile.
a. An O if no tiles have
been chosen. 2/25b. Any vowel if half of all
tiles and half of allvowels have beendrawn. 21/50
c. A blank if 38 tiles havebeen chosen, includingtwo blanks. 0
No. of tiles Letters
1 J,K,Q,X,Z
2 B,C,F,H,M,P,
V,W,Y,Blank
3 G
4 D,L,S,U
6 N,R,T8 O
9 A,I
12 E
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Simple Probability
Assignment: 1630 E, 3241 A
