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What is 4 - 3?
Grade Level:
Class 1
Maths, Computing, AI
Definition
What is it?
4 - 3 means taking away 3 from 4. It is a basic subtraction problem where you find the difference between two numbers. Subtraction helps us know how much is left after some items are removed.
Simple Example
Quick Example
Imagine you have 4 ladoos in a box. Your friend eats 3 of them. How many ladoos are left for you? This is exactly what 4 - 3 tells us.
Worked Example
Step-by-Step
Let's find out what 4 - 3 is:
Step 1: Start with the first number, which is 4.
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Step 2: Think of 4 items. You can use your fingers, or draw 4 small circles.
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Step 3: The minus sign (-) means 'take away'. We need to take away the second number, which is 3.
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Step 4: From your 4 fingers or circles, 'remove' or 'cross out' 3 of them.
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Step 5: Count how many fingers or circles are left.
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Step 6: You will find that 1 finger or circle is left.
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So, 4 - 3 = 1. The answer is 1.
Why It Matters
Understanding subtraction is super important for many things! In Computing, it helps programmers calculate values, like how much storage is left. In AI, it's used in algorithms that compare differences between data points. Careers like software developer, data analyst, and even game designer use these basic operations constantly.
Common Mistakes
MISTAKE: Thinking 4 - 3 is the same as 3 - 4 | CORRECTION: Subtraction order matters! 4 - 3 means taking 3 from 4, which is different from taking 4 from 3.
MISTAKE: Counting all numbers from 1 to 4 and then counting back 3 from 4 (e.g., 4, 3, 2, 1) and saying the answer is 1 | CORRECTION: When counting back, the number you land on is the answer. If you start at 4 and count back 3, you go 3 (1st step back), 2 (2nd step back), 1 (3rd step back). So 1 is correct.
MISTAKE: Adding the numbers instead of subtracting (4 + 3 = 7) | CORRECTION: Always look at the sign carefully. The '-' sign means subtraction, not addition.
Practice Questions
Try It Yourself
QUESTION: You had 5 cricket balls, but 2 rolled away. How many balls are left? | ANSWER: 3
QUESTION: Your phone battery was at 8% charge. You used 3% for a quick call. What is the battery percentage now? | ANSWER: 5%
QUESTION: A small auto-rickshaw fare was 10 rupees. You gave the driver a 20-rupee note. How much change should you get back? | ANSWER: 10 rupees
MCQ
Quick Quiz
What is the result of taking away 3 from 4?
7
1
0
3
The Correct Answer Is:
B
Taking away 3 from 4 means 4 - 3. If you have 4 items and remove 3, you are left with 1 item. Options A, C, and D are incorrect because they represent addition, no change, or the number being subtracted.
Real World Connection
In the Real World
Every day, we use subtraction without even thinking! When you check your mobile data balance and see how much you've used from your daily limit, you're doing subtraction. Or when a shopkeeper calculates your change after you pay for groceries using UPI, they are quickly subtracting amounts.
Key Vocabulary
Key Terms
SUBTRACTION: The process of taking one number or quantity away from another | DIFFERENCE: The result you get after subtracting one number from another | MINUS SIGN (-): The symbol used to show subtraction | TAKE AWAY: To remove a quantity from another
What's Next
What to Learn Next
Great job with basic subtraction! Next, you can learn about subtracting larger numbers, subtraction with borrowing, and even negative numbers. These concepts build on what you've learned today and will help you solve more complex problems.
