Form 2 Unit 1 Lesson 6: Solving Problems using the calculator

Objective

At the end of the topic the students should be able to:

Using the calculator saves time. It allows us to work out difficult and time consuming questions quickly.

To solve a problem, use the following strategies;

Understand the situation.
Read the description carefully. Underline key fact and what you are asked to find.
Look for useful strategies.
Follow your best strategy towards a solution.
Show all the working clearly and explain your solution in a way that others can follow.

Example 1

Melanie buys 45 kilograms of flour to bake her birthday cake at a cost of $5.78 per 5 kg bag. Find the cost of the flour.

Solution

Number of bags: 45÷ 5 =9

Cost = 9× $5.78

=$52.02

Cost of the flour is $52

Lesson Content