Copyright@Ed2netLearning,Inc1 EXPLORING PROBABILITY GRADE 3

copyright@Ed2netLearning,Inc 1

EXPLORING PROBABILITY

GRADE 3


Hello, How are you? Today, we are going to start a new lesson.


ProbabilityThe chances that an event will occur is

called Probability.

Example – There are 4 red pens in a bag. The probability of picking a pen is certain.


Possible OutcomesAny of the results that could occur in an

experiment is Possible Outcome.

Example – Heads and tails are the possible outcomes when flipping a coin.


Certain and ImpossibleThere are 6 yellow marbles and 1 black

marble in the box. Lisa picks one marble from the box.

It is certain that Lisa will pick a marble. There are only marbles in the box.

It is impossible that Lisa will pick a green marble. None of the marbles are green.


Likely and unlikely

It is likely that Lisa will pick a yellow marble. Six out of seven marbles are Yellow.

It is unlikely that Lisa will pick a black marble. Only 1 out of 7 marbles is black.


Write certain, likely, unlikely or impossible.

Three fruits are shown in the picture.

a) a piece of fruitb) Applec) Strawberryd) BananaAnswer- a) Certainb) Impossiblec) Unlikelyd) likely


If you have 5 green cubes and 2 pink cubes. Which cube you are likely to pull out of box?Answer - Green


What is the probability of coin landing on head?Answer- Equally likely – There are same

number of heads and tails.


Use the Chart below and the words likely, unlikely, certain or impossible to describe the probability.

1 2 3 4 5 6 7 8 9 10

11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30

31 32 33 34 35 36 37 38 39 40

41 42 43 44 45 46 47 48 49 50


What is the probability that the whole numbers from 1-50 contains a 5?Answer- unlikely


What is the probability that the whole numbers from 1-50 is greater than 0?Answer- Certain


What is the probability that the whole numbers from 1-50 is greater than 10?Answer- likely


What is the probability that the whole numbers from 1-50 has 3 digits?Answer- Impossible


What is the probability that the whole numbers from 1-50 is a multiple of 10?Answer - unlikely


What is the probability that the whole numbers from 1-50 has only 1 digit?Answer- unlikely


ASSESSMENT


Answer Questions (1-4) using the cubes.1. What is the probability that on tossing you get 7?

All sides of cube

Answer - Impossible


2. What is the probability that you will get a multiple of 2 if you roll the cube?Answer- Likely


3. What is the probability that you will get 3 on rolling the dice?Answer- unlikely


4. What is the probability that you will get a number less than 6 on rolling the dice?

Answer- Certain


A Candy bag has 2 cherry candies and 6 banana candy. Answer questions (5-7)5. Kerry is going to pick one candy from the bag. What is the probability that she will pick a banana candy?

Answer - likely


6. What is the probability that she will pick a cherry candy?Answer- Unlikely


7. What is the probability that she will pick a candy?Answer- Certain


A spinner is divided into 9 equal sections numbered 1 through 9. Answer questions (8-10).


8. If Jack spin’s the spinner, what is the probability that he will land on a number less than 8?Answer - Certain


9. What is the probability that he will land on either an odd or even number less than 10 ?

Answer - Certain


10. What is the probability that he will land on 2 digit number?Answer- Impossible


Recap• Probability• Possible outcomes• Likely and unlikely• Certain and Impossible• Solved Examples• Practice Problems


Well Done!Now practice worksheets on the lesson.

Documents

Copyright@Ed2netLearning,Inc1 EXPLORING PROBABILITY GRADE 3