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What is an Assumption (reasoning)?
Grade Level:
Pre-School – Class 2
All domains without exception
Definition
What is it?
An assumption is something we believe to be true without any proof or direct evidence. It's a hidden belief that influences our thoughts or actions, even if we don't say it out loud.
Simple Example
Quick Example
If your friend says, 'Let's go play cricket in the park,' you assume the park is open and it's not raining. These are things you believe without checking first.
Worked Example
Step-by-Step
Sita wants to make chai for her family. She goes to the kitchen.
---1. Sita decides to make chai.
---2. She picks up the saucepan and milk.
---3. She puts the saucepan on the stove.
---4. She tries to light the stove, but it doesn't light.
---5. What was Sita's assumption?
---ANSWER: Sita assumed that the gas cylinder had gas or that the electric stove was working. She didn't check before starting.
Why It Matters
Understanding assumptions helps you think more clearly and make better decisions in daily life. It's crucial for problem-solving in science, understanding stories in literature, and even planning projects in engineering or business.
Common Mistakes
MISTAKE: Thinking an assumption is always a fact. | CORRECTION: An assumption is a belief, not necessarily a proven fact. It needs to be checked.
MISTAKE: Not realizing you are making an assumption. | CORRECTION: Always pause and ask yourself, 'What am I taking for granted here?'
MISTAKE: Confusing an assumption with a conclusion. | CORRECTION: An assumption is what you believe BEFORE you start reasoning; a conclusion is what you arrive at AFTER reasoning.
Practice Questions
Try It Yourself
QUESTION: Your mom tells you, 'Please buy vegetables from the market.' What is one assumption you are making? | ANSWER: You assume the market is open.
QUESTION: A news report says, 'Mobile data usage has increased.' What is one assumption the report might be making about people's access to phones? | ANSWER: The report might assume that most people have smartphones or internet-enabled devices.
QUESTION: Your teacher says, 'Tomorrow's class will be online.' What are two assumptions everyone in the class is making? | ANSWER: 1. Everyone has a working internet connection. 2. Everyone has a device (phone/laptop) to join the online class.
MCQ
Quick Quiz
What is the best definition of an assumption?
A proven fact that is always true.
Something you believe to be true without proof.
The final answer to a problem.
A question that needs an answer.
The Correct Answer Is:
B
An assumption is a belief without proof. Options A is wrong because it's not a proven fact. Options C and D are wrong because an assumption is not an answer or a question.
Real World Connection
In the Real World
When a delivery app like Swiggy or Zomato estimates your food arrival time, they make assumptions: that the chef is working, traffic is normal, and the delivery person knows the route. If any of these assumptions are wrong, your food might be late!
Key Vocabulary
Key Terms
BELIEF: Something you think is true | PROOF: Evidence that something is true | EVIDENCE: Facts or information showing something is true | REASONING: The process of thinking about something in a logical way
What's Next
What to Learn Next
Now that you understand assumptions, you can move on to 'Inference.' An inference is a conclusion you reach based on evidence and your assumptions. It's the next step in critical thinking!


