Name:    Try It Out -- Chapter 12, Lesson 4

Matching

Put the problem solving steps in order.
 a. Look Back b. Understand the Problem c. Carry out the Plan d. Make a Plan

1.

What is the first step?

2.

What is the second step?

3.

What is the third step?

4.

What is the fourth step?

Robert has four jobs his mother expects him to do each day.  The jobs are:
- put dirty clothes away
- make bed
- put dirty dishes in dishwasher
- put game system and controllers away
Each day, Robert randomly picks which order he will do the jobs.
What is the probability that Robert will put the dirty dishes away after making his bed?

The steps to this problem, using an organized list, are shown below.
Match each step with the correct step from the Problem Solving Plan.

Organized Table:
 Job 1 Job 2 Job 3 Job 4 A B C D A B D C A C B D A C D B A D B C A D C B B A C D B A D C B C A D B C D A B D A C B D C A C A B D C A D B C B A D C B D A C D A B C D B A D A B C D A C B D B A C D B C A D C A B D C B A
 a. I’m sure that I covered all possible combinations because of how I completed the table. b. Make an organized list of all possible outcomes, which would be the different orders that Robert can do the jobs. c. Once the table is completed, I see that there are a total of 24 different orders for the 4 jobs.  Out of the 24 ways, there are 6 times when Job C comes directly after Job B. Therefore the probability of Job C coming after Job B is or . d. There are four jobs which I will label A, B, C, and DRobert randomly picks which order he does the jobs.I need to determine the probability that Robert does Job B, THEN Job C.

5.

Understand the Problem

6.

Make a Plan

7.

Carry Out the Plan

8.

Look Back

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.

9.

Using the organized Table for Robert’s Jobs, determine the probability that Robert does Job C, putting the dirty dishes in dishwasher, last.
 a. c. b. 6 d.

10.

Using the organized Table for Robert’s Jobs, determine the probability that Robert does either Job A or Job C first.
 a. 12 c. b. 0 d. 1