What is 5 × 10?

S1-SA1-0693

Grade Level:

Class 2

Maths, Computing, AI

Definition

What is it?

5 × 10 means you are adding the number 10, five times. It's a quick way to find the total when you have 5 groups of 10 items each. This operation is called multiplication.

Simple Example

Quick Example

Imagine you have 5 friends, and each friend has 10 colourful marbles. To find the total number of marbles all your friends have together, you would multiply 5 by 10. You're combining 5 sets of 10 marbles.

Worked Example

Step-by-Step

Let's find the value of 5 × 10.
1. We need to add the number 10, five times.
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2. Start with the first 10: 10
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3. Add the second 10: 10 + 10 = 20
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4. Add the third 10: 20 + 10 = 30
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5. Add the fourth 10: 30 + 10 = 40
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6. Add the fifth 10: 40 + 10 = 50
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So, 5 × 10 = 50.

Why It Matters

Understanding multiplication is key for many fields. In Computing, it's used in algorithms to process data quickly. AI uses it in machine learning models to make predictions. Knowing multiplication helps you build foundational logic for future STEM careers like a Software Engineer or a Data Scientist.

Common Mistakes

MISTAKE: Adding 5 and 10 instead of multiplying (getting 15) | CORRECTION: Remember that '×' means multiplication, which is repeated addition. You need to add 10 five times, not just add 5 and 10 once.

MISTAKE: Confusing the order (thinking 5 × 10 is different from 10 × 5) | CORRECTION: For multiplication, the order of numbers does not change the result. 5 × 10 is the same as 10 × 5.

MISTAKE: Miscounting when doing repeated addition | CORRECTION: Double-check your addition steps carefully. Count on your fingers or draw groups if it helps to ensure accuracy.

Practice Questions

Try It Yourself

QUESTION: If you buy 5 packets of biscuits, and each packet has 10 biscuits, how many biscuits do you have in total? | ANSWER: 50 biscuits

QUESTION: A small auto-rickshaw fare is ₹10 per kilometer. If you travel 5 kilometers, how much is the fare? | ANSWER: ₹50

QUESTION: Priya saves ₹10 every day for 5 days. Then, she spends ₹20. How much money does she have left? | ANSWER: ₹30

MCQ

Quick Quiz

What is another way to write 5 × 10?

5 + 10

10 + 10 + 10 + 10 + 10

5 + 5 + 5 + 5 + 5 + 5 + 5 + 5 + 5 + 5

50 - 10

The Correct Answer Is:

Option B (10 + 10 + 10 + 10 + 10) correctly shows 10 being added 5 times, which is the definition of 5 × 10. Options A and D are incorrect operations, and Option C is 10 times 5, not 5 times 10.

Real World Connection

In the Real World

When you buy groceries, say 5 bottles of milk, and each costs ₹10, the shopkeeper quickly calculates 5 × 10 = ₹50 using multiplication. Similarly, when a delivery app like Swiggy or Zomato calculates the total bill for 5 items costing ₹10 each, it uses this exact concept.

Key Vocabulary

Key Terms

Multiplication: A quick way to do repeated addition | Product: The answer to a multiplication problem | Factor: The numbers you multiply together | Repeated Addition: Adding the same number multiple times

What's Next

What to Learn Next

Great job understanding 5 × 10! Next, you can explore other multiplication tables, like 6 × 10 or 5 × 11. This will help you multiply larger numbers and solve more complex real-life problems.