Algorithm is a process or set of rules to be followed in calculations or other problem-solving operations.

Algorithms are the efficient ways to do math.

For example 90 divided by 5. We know that, answer for ⁹⁰/₅ = 18 Now the question is how do we get this answer?

Answer includes the following steps,

• First divide 9 by 5
• How many times does 5 go into 9?
• A: only once = 1
• What is remainder when 9 is divided by 5?
• it is 4
• Put that 4 in front of 2 (in 90), it will be 40
• how many times does 5 goes into 40?
• A: 8
• Therefore the answer is 18 when 90 is dived by 5 with remainder 1.

This is called Algorithm.