Solving Word Problems

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Solving Word Problems. Putting Your Translation Skills To Work. Let’s Make A Plan. Verbal Model Ask yourself what you need to know how to solve the problem. Labels This means define the variable Algebraic Model Write a math equation or inequality using your labels and verbal model Solve

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Solving Word Problems

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Solving Word Problems

Putting Your Translation Skills To Work

Let’s Make A Plan
• Verbal Model
• Ask yourself what you need to know how to solve the problem.
• Labels
• This means define the variable
• Algebraic Model
• Write a math equation or inequality using your labels and verbal model
• Solve
• Check to make sure your solution makes sense
Let’s Try Together
• You and some friends are at a Chinese restaurant. You order several \$2.00 plates of wontons, egg rolls, and dumplings. Your bill is \$25.20, which includes tax of \$1.20. Use modeling to find out how many plates you ordered.

Verbal Model
• Cost of food + tax = amount paid
• How do you determine cost of food?
• Each plate costs \$2.00 so
• # of plates  \$2.00 = cost of food
• Final verbal model
• \$2.00  # of plates + tax = amount paid
Labels
• X = number of plates you purchased
• 2 = amount paid per plate
• 1.20 = tax paid on food
• 25.20 = amount paid for food and tax
Algebraic Model
• Substitute the labels for the words in the verbal model
• \$2.00  # of plates + tax = amount paid
• 2x + 1.20 = 25.20
• 2x + 1.20 = 25.20
• 1.20 - 1.20

2x = 24.00

2 2

x = 12.00

There were 12 plates of food ordered

2(12) + 1.20 = 25.20 ?

24 + 1.20 = 25.20 √

Pratice Workbook Page 17

Verbal Model

• \$8 per hat has to equal \$2480

Labels

• 8 = cost of one hat x = number of hats
• 2480 = amount they want to make

Algebraic Model

8x = 2480

Solution

x = 310 hats

Check

8  310 = 2480 √

Where are we now?
• Vocab List is due on Friday during the test
• Test over all of chapter 1 will be Friday
• Tutoring available Tues – Fri at 8:15 AM
• Also Wednesday after school from 4:00 – 5:30 PM
• Don’t forget homework Pages 39 – 40
• Walk or SUBWAY, Kudzu and Stereo Problems (#5-20)