Page 94 - Math Course 1 (Book 1)

Algebra: Problem-Solving

Mo. 3

Lesson 1
Key Concept

KEY CONCEPTS: To solve any problem requires a 4 step
1. Use a four-step plan to solve problems. problem solving plan:
2. Choose an appropriate method of 1. Explore
computation. 2. Plan
3. Use the four-step plan to solve real world 3. Solve
problems. 4. Examine Explore Plan

Problem
Solving
MO. 3 - L1a

Four-Step Plan in Examine Solve

Problem-Solving

Vocabulary A-Z
Let us learn some vocabulary
Let’s Begin

Conjecture Using a 4 Step Problem-Solving
a conjecture is an educated guess. Plan

Pizza

The price of a large cheese
pizza at Paul’s Pizza Place is $9.25.
You receive a $0.50 discount for each additional
pizza ordered, up to 10.

So, one pizza costs $9.25, two pizzas cost $8.75
each, three pizzas cost $8.25 each, and so on.
Inductive Reasoning
If you need 8 pizzas for a party, what is the cost
a conjecture (guess) based on a pattern or past per pizza?
events.
Explore
? The problem gives the cost for the f rst pizza and
the discount for each additional pizza ordered. We
need to f nd the cost per pizza for an order of 8
pizzas.
2...4...6...8...?
1st pizza costs $9.25

Each additional pizza is discounted $0.50 for up
to 10 pizzas

We need to f nd the cost per pizza for an order of
8 pizzas.

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