1. A plan for problem solving Chapter 1 Lesson 5

2. A Problem-Solving Plan Explore Plan Solve Examine

3. Problem Solving Strategies

4. Using an Equation G I = PRT G I = G P= G R= G T= G I = PRT G I = G P= G R= G T= Suppose you deposit $220 into an account that pays 3% simple interest. How much money would you have in the account after five years?

5. How many ways can you make $0.50 using quarters, nickels and dimes? G EXPLORE: G What information is given? G What do I need to find out? G EXPLORE: G What information is given? G What do I need to find out?

6. G PLAN: G Select a strategy: G Estimate what you think the answer should be: G PLAN: G Select a strategy: G Estimate what you think the answer should be:

7. SOLVE

8. EXAMINE: G Check your answer. Does it make sense?

9. Leona is 12 years old, and her sister Vicki is 2 years old. How old will each of them be when Leona is twice as old as Vicki? G EXPLORE: G What information am I given? G What do I need to find out? G EXPLORE: G What information am I given? G What do I need to find out?

10. PLAN: G Select a strategy: G Estimate what you think the answer should be: G Select a strategy: G Estimate what you think the answer should be:

11. SOLVE:

12. EXAMINE: G Check your answer. Does it make sense?

13. Zoe has the following breads, mean and cheeses to choose from to make a sandwich. How many different sandwiches can she make if she can only use one type of bread, meat and cheese at a time? BREADMEATCHEESE WhiteHamSwiss RyeTurkeyProvolone Salami

14. EXPLORE: G What information am I given? G What do I need to find out? G What information am I given? G What do I need to find out?

15. PLAN: G Select a strategy: G Estimate what you think the answer should be: G Select a strategy: G Estimate what you think the answer should be:

16. SOLVE:

17. EXAMINE G Check your answer. Does it make sense?

18. 1. Michael is 3 years older than Andrew. The sum of their ages is 15. How old are they?

19. Janice and Michelle take turns driving as they go to the beach. Janice drives 35 miles farther than Michelle. How far did Michelle drive if together they drove a total of 155 miles?

20. Isabelle deposits $1200 into her savings account, which has an interest rate of 3%. How much money will she have in her account after 4 years?

21. How many ways are there to make $0.30 using pennies, nickels and dimes?

22. The volume of a box is the product of its length, width and height. What is the volume of a box whose length is 14 inches, width is 8 inches and height is 6 inches.

23. Austin, Claire, Sydney and Matt are the first four batters on a baseball team. The coach is still deciding on the order in which to have them bat. How many different ways can the coach arrange them?

24. Gasoline costs $1.21 per gallon, tax included. Jaime paid $10.89 for the gasoline he put in his car. How many gallons of gasoline did he buy?

25. Ryan paid for 6 CDs at a special 2-for-1 sale. The CDs that he got at the sale brought the total number of CDs in his collection to 42. How many CDs did he have before the sale?