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What is Finding 1% of a Number?
Grade Level:
Class 5
Maths, Finance, Data Science, AI, Statistics
Definition
What is it?
Finding 1% of a number means figuring out what one part out of every hundred equal parts of that number is. It's like dividing the whole number into 100 tiny, equal pieces and picking just one of them.
Simple Example
Quick Example
Imagine your school has 500 students. If 1% of the students are prefects, how many prefects are there? You need to find 1 part out of 100 parts of 500. This means there are 5 prefects.
Worked Example
Step-by-Step
Let's find 1% of 850 rupees.
Step 1: Understand that 1% means 1 out of 100, which can be written as the fraction 1/100.
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Step 2: To find 1% of 850, we multiply 850 by 1/100.
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Step 3: This is the same as dividing 850 by 100.
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Step 4: When you divide a number by 100, you move the decimal point two places to the left. For 850, the decimal point is after the 0 (850.0).
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Step 5: Moving the decimal two places left gives us 8.50.
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Answer: 1% of 850 rupees is 8.50 rupees.
Why It Matters
Understanding 1% helps you calculate discounts on your favourite clothes, understand interest rates on loans, and even grasp how data scientists analyze small changes in large datasets. It's a foundational skill for careers in finance, data analysis, and even creating smart AI systems that need precise calculations.
Common Mistakes
MISTAKE: Multiplying the number by 1 instead of 1/100 or 0.01. | CORRECTION: Remember that 'percent' literally means 'per hundred'. So, 1% is always 1 divided by 100.
MISTAKE: Moving the decimal point only one place instead of two. | CORRECTION: Dividing by 100 always means moving the decimal point exactly two places to the left.
MISTAKE: Forgetting the decimal point entirely and just writing the number without the last two digits. | CORRECTION: Always place the decimal point correctly to show the exact value. For example, 1% of 300 is 3.00, not just 3.
Practice Questions
Try It Yourself
QUESTION: What is 1% of 600? | ANSWER: 6
QUESTION: Your mobile recharge costs 299 rupees. If you get 1% cashback, how much cashback do you receive? | ANSWER: 2.99 rupees
QUESTION: A farmer grew 1250 kg of mangoes. He sold 1% of them to a local market. How many kg of mangoes did he sell? | ANSWER: 12.5 kg
MCQ
Quick Quiz
How do you calculate 1% of a number?
Multiply the number by 100
Divide the number by 100
Add 1 to the number
Subtract 1 from the number
The Correct Answer Is:
B
To find 1% of a number, you divide it by 100. This is because 1% means 1 out of 100 parts, so dividing by 100 gives you that one part.
Real World Connection
In the Real World
When you see '1% service charge' added to your bill at a restaurant, or a '1% processing fee' for online payments using UPI, this concept is being used. Banks also use it to calculate small interest amounts on your savings or loans.
Key Vocabulary
Key Terms
PERCENT: Out of every hundred | DECIMAL POINT: A symbol used to separate the whole number part from the fractional part of a number | FRACTION: A way to represent parts of a whole, like 1/100 | DIVIDE: To split into equal parts
What's Next
What to Learn Next
Great job understanding 1%! Now that you know how to find 1%, you're ready to learn how to find other percentages like 10%, 25%, or even 50% of a number. This will open up many more real-world calculations!
