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What is 9 - 3?
Grade Level:
Class 1
Maths, Computing, AI
Definition
What is it?
9 - 3 means taking away 3 from 9. It is a basic subtraction problem where you find the difference between two numbers. The result tells you how many are left after removing a certain amount.
Simple Example
Quick Example
Imagine you have 9 ladoos in a box. Your friend eats 3 of them. How many ladoos are left in the box? You need to subtract 3 from 9 to find the answer.
Worked Example
Step-by-Step
Let's find the answer to 9 - 3:
1. Start with the first number, which is 9.
2. We need to subtract the second number, which is 3.
3. You can count backwards from 9, three times. So, 9, then 8 (1st step), then 7 (2nd step), then 6 (3rd step).
4. Another way is to use your fingers. Hold up 9 fingers. Now, put down 3 fingers.
5. Count the fingers that are still up. You will have 6 fingers remaining.
--- The answer is 6.
Why It Matters
Understanding subtraction is fundamental for Maths, Computing, and even AI. It helps in basic calculations for budgeting, managing data, and even in programming simple games. Engineers, data scientists, and even app developers use these basic operations constantly.
Common Mistakes
MISTAKE: Adding the numbers instead of subtracting (e.g., 9 + 3 = 12) | CORRECTION: Remember the minus sign (-) means 'take away' or 'find the difference', not 'add'.
MISTAKE: Counting incorrectly (e.g., counting 9, 8, 7, and stopping, thinking the answer is 7) | CORRECTION: Always count the correct number of steps backwards or carefully remove the correct amount.
MISTAKE: Confusing the order (e.g., calculating 3 - 9 instead of 9 - 3) | CORRECTION: Subtraction order matters! Always take the second number away from the first number.
Practice Questions
Try It Yourself
QUESTION: What is 7 - 2? | ANSWER: 5
QUESTION: If you have 8 cricket balls and 3 roll away, how many are left? | ANSWER: 5
QUESTION: Your mother bought 10 rotis. You ate 2, and your brother ate 2. How many rotis are left? | ANSWER: 6
MCQ
Quick Quiz
What is the result of 9 minus 3?
5
6
7
12
The Correct Answer Is:
B
When you take 3 away from 9, you are left with 6. Options A, C, and D are incorrect results for this subtraction.
Real World Connection
In the Real World
When you buy groceries, if you give a shopkeeper a 100 Rupee note for items costing 94 Rupees, they need to subtract 94 from 100 to give you the correct change (6 Rupees). This is a real-life use of subtraction that happens every day in India.
Key Vocabulary
Key Terms
SUBTRACTION: Taking one number away from another | DIFFERENCE: The result of a subtraction problem | MINUS: The symbol (-) used for subtraction | COUNTING BACKWARDS: A method to subtract by counting down from the larger number
What's Next
What to Learn Next
Now that you understand basic subtraction, you can learn about subtraction with larger numbers and borrowing. This will help you solve more complex problems in daily life and in your studies.
