Section 3.6

Writing Equations

for

Story Problems

Add this list of numbers.(without a calculator, paper, or pencil.)

25

19

34

31

12

17

9

Setting Up and

Solving Story Problems

Use the Problem Solving Method.

Problem Solving MethodAsk- Read the problem carefully to determine

what you are trying to find.Brainstorm- What can we use a variable to

represent?Choose- Find the best way to define the

variables.Demonstrate- Set up the equation and solve

the problem.Evaluate- Does your solution answer the

problem? (and seem reasonable)

Eighteen is fifteen less than the product of a number and three. What is the number?

The perimeter of a rectangle is 44 feet. The length of the rectangle is 6 feet more than the width. What is the measure of the width?

Beth’s mom is 6 times older than Beth. Beth’s dad is 7 years older than Beth’s mom. The sum of their ages is 72. How old are each of them?

Three boxes have a total weight of 640 pounds. Box A weighs twice as much as Box B. Box C weighs 30 pounds more than Box A. How much do each of the boxes weigh?

Homework

Story Problems Worksheet 1