A purse has 47¢ made up of 5 coins. What is the probability of picking out a dime & then without replacing it, picking a quarter? 47¢ = 2 pennies, 2 dimes and a quarter. Chances were 2/5 for the dime, then 1 in 4 for the quarter. Multiply to get 1/10.

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Counting Principle Worksheets

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Basic Lesson: Introduces the fundamental counting principle. Provides a basic application.; Standard: MATH 4
Grades: (9-12); View worksheet

Intermediate Lesson: This lesson focuses on using the counting principle with word problems.; Standard: MATH 4
Grades: (9-12); View worksheet

Independent Practice 1: Students practice with 20 counting principle problems. The answers can be found below.; Standard: MATH 4
Grades: (9-12); View worksheet

Independent Practice 2: Another 20 counting principle problems. The answers can be found below.; Standard: MATH 4
Grades: (9-12); View worksheet

Homework Worksheet: Reviews all skills in the unit. A great take home sheet. Also provides a practice problem.; Standard: MATH 4
Grades: (9-12); View worksheet

Counting Principle Quiz: 10 problems that test counting principle skills.; Standard: MATH 4
Grades: (9-12); View worksheet

Answer Keys: Answers for the homework and quiz.; View answers

Answer Keys: Answers for both lessons and both practice sheets.; View answers

What is Probability? How Does It Shape Our Lives?: You probably never even thought about probability?; View Math Article

Why is calculating the probability of events important in life?: The impact of probability on our lives is much greater reaching than you ever thought.; View Math Article

More Advanced Worksheets: The next level of math skills.; -Counting Principle
-Interpreting Data
-Sample Spaces
-Tree Diagrams

Remedial Math Worksheets: Skills needed to get to this level.; -Basic Algebra
-Function Tables
-Integer Word Problems
-Mixed Word Problems