What is 5 - 4? | Simple Explanation for Class 1

S1-SA1-1032

What is 5 - 4?

Grade Level:

Class 1

Maths, Computing, AI

Definition

What is it?

5 - 4 means taking away 4 from 5. It is a basic subtraction problem where you find the difference between two numbers. The answer tells you how many are left after removing a smaller number from a larger one.

Simple Example

Quick Example

Imagine you have 5 delicious gulab jamuns. If your friend eats 4 of them, how many gulab jamuns are left for you? This is exactly what 5 - 4 helps us figure out.

Worked Example

Step-by-Step

Let's find out what 5 - 4 is:
1. Start with the first number, which is 5. You can imagine 5 objects, like 5 cricket balls.
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2. The minus sign (-) tells us to take away or subtract.
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3. The second number is 4. So, we need to take away 4 cricket balls from the 5 you started with.
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4. Count them: If you have 5 balls and remove 4, you are left with 1 ball.
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5. Therefore, 5 - 4 = 1.
Answer: 1

Why It Matters

Understanding simple subtraction like 5 - 4 is crucial for Maths, Computing, and even AI. In computing, it's used in basic calculations for programs, and in AI, it forms the foundation for algorithms that compare and adjust values. Engineers, data scientists, and software developers use these fundamental ideas daily.

Common Mistakes

MISTAKE: Thinking 5 - 4 is the same as 4 - 5 | CORRECTION: Subtraction order matters! 5 - 4 is not the same as 4 - 5. Always subtract the second number from the first.

MISTAKE: Counting all numbers again instead of taking away | CORRECTION: Start with the first number and count backwards the second number of times, or remove that many items.

MISTAKE: Confusing subtraction with addition | CORRECTION: The minus sign (-) means 'take away', not 'add'. Make sure you understand the difference between - and +.

Practice Questions

Try It Yourself

QUESTION: You had 7 crayons and gave 3 to your sister. How many crayons do you have left? | ANSWER: 4

QUESTION: A bus has 10 seats. If 6 passengers are already sitting, how many seats are empty? | ANSWER: 4

QUESTION: Riya had 8 rupees. She bought a small pencil for 3 rupees and a rubber for 2 rupees. How much money does Riya have left? | ANSWER: 3 rupees (8 - 3 - 2 = 3)

MCQ

Quick Quiz

What is the result of 9 - 5?

The Correct Answer Is:

When you take 5 away from 9, you are left with 4. Options A, C, and D are incorrect results of this subtraction.

Real World Connection

In the Real World

Imagine you are checking your mobile data usage. If you started with 5 GB of data and have used 4 GB, you can quickly calculate that you have 1 GB remaining. This simple subtraction helps you manage your data plan and avoid extra charges.

Key Vocabulary

Key Terms

SUBTRACTION: The process of taking one number or quantity away from another | DIFFERENCE: The result of subtracting one number from another | MINUS SIGN (-): The symbol used to show subtraction | QUANTITY: An amount or number of something

What's Next

What to Learn Next

Great job understanding 5 - 4! Next, you should learn about subtracting larger numbers and mental math strategies for subtraction. This will help you solve more complex problems faster and become a math wizard!