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What is 5 - 1?
Grade Level:
Class 1
Maths, Computing, AI
Definition
What is it?
5 - 1 means taking away 1 from 5. 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 5 delicious ladoos. If you eat 1 ladoo, how many are left? You started with 5, took away 1, so 4 ladoos are remaining.
Worked Example
Step-by-Step
Let's calculate 5 - 1.
1. Start with the first number, which is 5.
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2. The second number is 1, and the minus sign means we need to take away 1 from 5.
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3. You can count backwards from 5, one step: 5... then 4.
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4. So, when you take 1 away from 5, you are left with 4.
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Answer: 4
Why It Matters
Understanding simple subtraction is the base for all advanced Maths, Computing, and even AI. Engineers use it to calculate distances, programmers use it in coding logic, and data scientists use it to compare numbers. It's a fundamental skill for many exciting careers.
Common Mistakes
MISTAKE: Thinking 5 - 1 means adding 1 to 5. | CORRECTION: The minus sign (-) always means to take away or subtract, not to add.
MISTAKE: Counting forward instead of backward. For example, counting 5, 6 instead of 5, 4. | CORRECTION: When you subtract, you always count backwards from the first number.
MISTAKE: Getting confused with larger numbers later on. | CORRECTION: Always start with the first number and take away the second number. Visualise objects if it helps.
Practice Questions
Try It Yourself
QUESTION: You have 5 pencils and give 1 to your friend. How many pencils do you have left? | ANSWER: 4 pencils
QUESTION: A bus has 5 seats empty. If 1 person gets on the bus, how many empty seats are left? | ANSWER: 4 empty seats
QUESTION: Riya had 5 rupees. She bought a small candy for 1 rupee. Later, her mother gave her 2 more rupees. How much money does Riya have now? | ANSWER: 6 rupees (5 - 1 = 4; 4 + 2 = 6)
MCQ
Quick Quiz
What is the result of 5 minus 1?
6
4
5
1
The Correct Answer Is:
B
Subtracting 1 from 5 means taking one away. If you have 5 items and remove 1, you are left with 4. Adding 1 would give 6.
Real World Connection
In the Real World
When you check your mobile data balance, and it shows 5 GB, then you watch a short video that uses 1 GB. The app quickly calculates 5 - 1 = 4 GB remaining. This basic subtraction happens instantly inside your phone!
Key Vocabulary
Key Terms
SUBTRACTION: Taking one number away from another | DIFFERENCE: The result you get after subtracting one number from another | MINUS SIGN (-): The symbol used for subtraction
What's Next
What to Learn Next
Great job understanding 5 - 1! Next, you can learn about subtracting larger numbers and then move on to adding numbers. These skills are like building blocks for all your future math adventures!
