Using a Computer to do Simple Mathematical Calculations - JSS3 Mathematics Lesson Note

Computers perform mathematical calculations using binary arithmetic. Most programming languages and calculators allow users to input arithmetic expressions directly.

Steps to Perform Calculations:

Open a Calculator Application: Most operating systems have built-in calculator apps.

Input the Expression: Enter the numbers and arithmetic operators (such as +, -, *, /).

Press Enter or Equals: The calculator processes the input and displays the result.

Example:

1. Addition: 25 + 17

Input: 25 + 17

Output: 42

2. Multiplication: 7 * 6

Input: 7 * 6

Output: 42

Using Programming Languages (Python Example):

print(25 + 17)  # Output: 42

print(7 * 6)    # Output: 42