Upload
412137
View
221
Download
0
Embed Size (px)
Citation preview
8/13/2019 Pre Algebra Lesson 9 3
1/15
Simple Probability
Goals: In this lesson, youll find
the probability of simple events.
8/13/2019 Pre Algebra Lesson 9 3
2/15
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?
8/13/2019 Pre Algebra Lesson 9 3
3/15
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
8/13/2019 Pre Algebra Lesson 9 3
4/15
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.
8/13/2019 Pre Algebra Lesson 9 3
5/15
Simple Probability
Examples
1) What is the probability that you will roll a
1or 6 when you roll a number cube?
8/13/2019 Pre Algebra Lesson 9 3
6/15
Simple Probability
Examples
1) What is the probability that you will roll a
1or 6 when you roll a number cube? 1/3
8/13/2019 Pre Algebra Lesson 9 3
7/15
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?
8/13/2019 Pre Algebra Lesson 9 3
8/15
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
8/13/2019 Pre Algebra Lesson 9 3
9/15
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
8/13/2019 Pre Algebra Lesson 9 3
10/15
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
8/13/2019 Pre Algebra Lesson 9 3
11/15
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
8/13/2019 Pre Algebra Lesson 9 3
12/15
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
8/13/2019 Pre Algebra Lesson 9 3
13/15
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
8/13/2019 Pre Algebra Lesson 9 3
14/15
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
8/13/2019 Pre Algebra Lesson 9 3
15/15
Simple Probability
Assignment: 1630 E, 3241 A