Splash Screen. Lesson Menu Five-Minute Check (over Lesson 15–1) Main Idea and Vocabulary Key Concept: Probability Example 1:Use Fractions to Describe.

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Splash Screen

Lesson Menu Five-Minute Check (over Lesson 15–1) Main Idea and Vocabulary Key Concept: Probability Example 1:Use Fractions to Describe Probability Example 2:Real-World Example Make a Prediction

Main Idea/Vocabulary I will use fractions to describe probability. favorable outcome

KC

Example 1 Use Fractions to Describe Probability One marble is chosen from the bag. Find the probability that a red marble is chosen.

Example 1 Use Fractions to Describe Probability P(event) = number of favorable outcomes number of possible outcomes P(red) = 6 16 P(red) = 3 8 number of red marbles total number of marbles Simplify. Answer: So, the probability of choosing a red marble is. 3 8

1.A 2.B 3.C 4.D Example 1 B. 1 8 One marble is chosen from the bag. Find the probability that a blue marble is chosen. D A. 3 8 C. 1 2

Example 2 Jamal is making a beaded belt. Each packet of beads comes in the colors shown in the table. If Jamal takes one bead without looking, what is the probability that he gets a blue or green bead? There are or 60 beads in all. There are or 42 beads that are either blue or green.

Example 2 P(event) = number of favorable outcomes number of possible outcomes P(blue or green) = = = 7 10 blue or green beads total number of beads Add. Simplify. Answer: So, the probability that Jamal will get a blue or green bead is. 7 10

1.A 2.B 3.C 4.D Example 2 Looking at the chart below, what is the probability of picking a red or a yellow bead at random? B. 5 8 D A. 3 8 C. 1 8

End of the Lesson End Lesson

Resources Five-Minute Check (over Lesson 15–1) Image Bank Math Tool Chest Make a Prediction

1.A 2.B 3.C 4.D 5.E Five Minute Check 1 (over Lesson 15–1) One card is drawn without looking. Describe the probability of drawing an even number rather than an odd number. A.impossible B.likely C.equally likely D.unlikely E.certain

1.A 2.B 3.C 4.D 5.E Five Minute Check 2 (over Lesson 15–1) One card is drawn without looking. Describe the probability of drawing 5 rather than 8. A.impossible B.likely C.equally likely D.unlikely E.certain

1.A 2.B 3.C 4.D 5.E Five Minute Check 3 (over Lesson 15–1) One card is drawn without looking. Describe the probability of drawing 2 rather than 7. A.impossible B.likely C.equally likely D.unlikely E.certain

1.A 2.B 3.C 4.D 5.E Five Minute Check 4 (over Lesson 15–1) One card is drawn without looking. Describe the probability of drawing 9. A.impossible B.likely C.equally likely D.unlikely E.certain

1.A 2.B 3.C 4.D 5.E Five Minute Check 5 (over Lesson 15–1) One card is drawn without looking. Describe the probability of drawing an even or an odd number. A.impossible B.likely C.equally likely D.unlikely E.certain

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