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WRITING SIMPLE ALGORITHMS Step 6 Add ice cubes if desired.

Writing an algorithm means breaking a task into simple steps. While writing an Step 7 End
algorithm make sure that anyone, even someone who has never done the task

before, can follow your steps and get the right result. It is important to be clear and LOGICAL THINKING AND DECISION MAKING
precise to avoid confusion or errors. Let's learn how to do this well.
Logical thinking is when you make decisions based on facts and rules, not feelings
Writing Simple Algorithms or guesses. While solving a maths problem or following a set of rules in a game,

logical thinking is always used.
Understand the problem
Example:
Before you write a single step, ask  Not logical (feelings/guess): "I think it will rain because I feel sad today."
yourself: What is the goal? What do
Step 1
I start with? What should happen at  Logical (facts/rules): "The weather app says 80% rain and dark clouds are in the
the end? sky. So, I will take an umbrella.”

One of the most important elements in algorithmic thinking is the decision.
Sometimes, you need to choose between options. This is called decision making.

For example, deciding what to wear.
Break the task into small steps Step 2
 If it is raining → Wear a raincoat.
Once you understand the problem,
break the process into the smallest  If it is sunny → Wear light clothes.

possible steps. These are called conditions (if–then statements). Conditions are used to make
decisions based on specific situations. They help in deciding the action to take

Step 3 Check your steps depending on whether the condition is true or false.

Read your own steps as if you have never Algorithm:
seen them before to spot gaps. Have Step 1 Start
someone else follow your instructions
exactly. If they stumble, your instructions Step 2 Check if it is raining

need more clarity. Step 3 If YES → Take an umbrella

For example, making a glass of lemonade. Step 4 If NO → Do not take an umbrella

Algorithm: Step 5 End

Step 1 Start

Step 2 Squeeze two lemons into a jug.
If P stands for ‘+’, Q stands for ‘-’, R stands for ‘x’ and S stands for ‘÷’ then
Step 3 Add two cups of water to the jug.
18 R 14 P 6 Q 16 S 4 is .
Step 4 Mix in three teaspoons of sugar and
a) 252 b) 253
stir well.

Step 5 Pour the lemonade into a glass. c) 254 d) 256

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