1. Calculating Probabilities If a set of events have an equal chance of occurring, it is possible to calculate probabilities. For example, you can calculate the probability of rolling a 4 on a die because the 4 has the same chance of occurring as the other numbers.

2. Calculating Probabilities If you can calculate probabilities, you can use this simple method: The probability of an event happening The number of results you want The number of possible results =

3. Calculating Probabilities If you can calculate probabilities, you can use this simple method: The probability of rolling a 4 on a normal die 1 side with the number 4 6 possible sides =

4. Calculating Probabilities If you can calculate probabilities, you can use this simple method: The probability of rolling a 4 on a normal die 1616 =

5. Calculating Probabilities Which of these statements are true about the word MATHEMATICAL? The probability of picking a vowel is 50 % because a letter picked is either a vowel or it isnt. The probability of picking a vowel is 5 because there are 5 vowels out of 12 12 letters. False, there are less vowels than consonants. True

6. Calculating Probabilities car walk bus bike other How class 6b get to school Decide which of these statements are true. This spinner represents all of class 6B

7. Calculating Probabilities car walk bus bike other The chance of landing on a person who said bike or car is the same as landing on a person who walks. The chance of getting bike is the same as getting car True False

8. Calculating Probabilities car walk bus bike other The chance of getting car is 1 2 The chance of getting car is 25 % False True