What is 3 × 11?

S1-SA1-0677

Grade Level:

Class 3

Maths, Computing, AI

Definition

What is it?

3 × 11 means adding the number 11 three times. It's a basic multiplication problem where you find the total when you have 3 groups of 11 items.

Simple Example

Quick Example

Imagine you buy 3 packets of laddoos for Diwali. If each packet has 11 laddoos, how many laddoos do you have in total? You would multiply 3 by 11 to find the answer.

Worked Example

Step-by-Step

Let's find the answer to 3 × 11:

Step 1: Understand that '3 × 11' means '11 added 3 times'.

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Step 2: Write it out as an addition problem: 11 + 11 + 11.

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Step 3: Add the first two numbers: 11 + 11 = 22.

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Step 4: Add the result to the third number: 22 + 11.

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Step 5: Perform the final addition:
22
+ 11
-----
33

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Answer: So, 3 × 11 = 33.

Why It Matters

Understanding basic multiplication like this is super important for many fields! In Computing, it helps calculate memory usage or data transfer speeds. In AI, it's used in building algorithms that process large amounts of data. Careers like software developers, data scientists, and even game developers use multiplication daily.

Common Mistakes

MISTAKE: Adding 3 and 11 to get 14. | CORRECTION: Multiplication is not addition. You need to add 11 three times, not add 3 to 11.

MISTAKE: Getting confused and thinking it's 3 + 3 + 3 + ... (11 times). | CORRECTION: The first number (3) tells you how many times to add the second number (11). So, it's 11 + 11 + 11.

MISTAKE: Forgetting simple multiplication tables and guessing. | CORRECTION: Practice your multiplication tables (especially the 3 times table and 11 times table). Knowing them by heart makes these problems very fast.

Practice Questions

Try It Yourself

QUESTION: What is 11 + 11 + 11? | ANSWER: 33

QUESTION: If a bus ticket costs Rs. 11, how much will 3 tickets cost? | ANSWER: Rs. 33

QUESTION: You have 3 friends, and each friend gives you 11 stickers. Your brother then gives you 5 more stickers. How many stickers do you have in total? | ANSWER: 38 (3 x 11 = 33, then 33 + 5 = 38)

MCQ

Quick Quiz

Which of these is the correct way to calculate 3 × 11?

3 + 11

11 + 11 + 11

3 + 3 + 3

3 - 11

The Correct Answer Is:

Option B is correct because 3 × 11 means adding the number 11 three times. Options A, C, and D represent different operations.

Real World Connection

In the Real World

When you use a mobile app like Swiggy or Zomato to order food, the app calculates the total cost. If you order 3 items, each costing Rs. 11, the app quickly multiplies 3 × 11 to show you Rs. 33 as part of your bill. This simple math is happening behind the scenes!

Key Vocabulary

Key Terms

MULTIPLICATION: A way of adding a number to itself a certain number of times. | PRODUCT: The answer you get when you multiply two or more numbers. | FACTOR: A number that is multiplied by another number to get a product. (Here, 3 and 11 are factors) | TIMES TABLE: A list of the results of multiplying a particular number by other numbers.

What's Next

What to Learn Next

Great job understanding 3 × 11! Next, you should explore other multiplication tables, like the 4 times table or the 12 times table. This will help you multiply bigger numbers faster and solve more complex problems in the future.