1. 0-1: Plan for Problem Solving

2. 0-1: Plan for Problem Solving
Four-Step Problem-Solving Plan
Understand the problem
Identify what information is given
Identify what you need to find
Plan the solution
Choose a variable to represent one of the unknown numbers in the problem
Use the variable to write an expression for the other unspecified numbers in the problem
Solve the problem
Use the strategy you chose in step 2
Check the solution
Does your answer make sense?
Does it fit the information in the problem?

3. 0-1: Plan for Problem Solving
Example 1
Ling’s hallway is 10 ft long by 4 ft wide. He paid $200 to tile his hallway floor. How much did Ling pay per square foot for the tile?
(Discussion in class)
The tile cost is $5 per square foot

4. 0-1: Plan for Problem Solving
Sometimes you can provide an estimated answer instead
Example 2
Fabric costs $5.15 per yard. The drama department needs 18 yards of the fabric for their new play. About how much should they expect to pay.
(Discussion in class)
About $100

5. 1) The city Convention Center has hired James to paint a mural on one of the outside walls. The wall is 30 feet long and 15 feet tall. He is being paid $1350 for the project. How much is James being paid per square foot of the mural?
$3/ft2
$4.50/ft2
$2/ft2
$6/ft2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

6. 2) Alicia needs to waterproof her house’s back deck, which is 18 feet by 5 feet. The waterproof coating costs $6 for a can that covers 30 square feet. How much will the project cost her in total?
$24
$12 $6
$18 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

7. 193 mi/gal 172.5 mi/gal 162 mi/gal 186.5 mi/gal
3) Roberto’s scooter traveled 746 miles before needing fuel. If he started with 4 gallons of fuel in the tank, describe the scooter’s gas mileage.
193 mi/gal
172.5 mi/gal
162 mi/gal
186.5 mi/gal 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

8. 4) While visiting an orchard, the Williams family picked 98 apples, 49 oranges, 52 lemons, and 103 limes. Approximately how much fruit did the family pick in total that day?
250
150
200
300 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

9. Janna rented a moving truck for 3 days. It cost her $95
Janna rented a moving truck for 3 days. It cost her $95.25 per day, but she had a coupon for $10 off per day. What was the final cost of using the truck?
$275.75
$300.25
$225.50
$255.75 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

10. 0-1: Plan for Problem Solving
Assignment
Page P6
Problems 1 – 5 (odd)