What is 3 × 10?

S1-SA1-0676

Grade Level:

Class 2

Maths, Computing, AI

Definition

What is it?

3 × 10 means adding the number 10 three times. It is a basic multiplication problem where you find the total when you have 3 groups of 10 items each.

Simple Example

Quick Example

Imagine you have 3 packets of biscuits, and each packet has 10 biscuits inside. To find the total number of biscuits, you would calculate 3 × 10. You are essentially counting all the biscuits together.

Worked Example

Step-by-Step

Let's find the answer to 3 × 10 step-by-step:
Step 1: Understand what '3 × 10' means. It means 3 groups of 10, or 10 added 3 times.
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Step 2: Write it as repeated addition: 10 + 10 + 10.
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Step 3: Add the first two numbers: 10 + 10 = 20.
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Step 4: Add the result to the last number: 20 + 10 = 30.
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Step 5: So, 3 × 10 equals 30.
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Answer: 30

Why It Matters

Understanding multiplication helps you quickly solve problems in Maths and even in advanced fields like Computing. Engineers use multiplication to design circuits, and AI developers use it in algorithms to process data. Learning this skill early helps you think logically for future careers.

Common Mistakes

MISTAKE: Adding 3 and 10 to get 13 | CORRECTION: Remember that 'x' means multiplication, not addition. You need to add 10 three times, not add 3 to 10.

MISTAKE: Confusing multiplication with division, thinking it means splitting 10 into 3 parts | CORRECTION: Multiplication is about combining equal groups to find a total, not splitting them.

MISTAKE: Forgetting that any number multiplied by 10 just adds a zero at the end (for whole numbers) | CORRECTION: A quick trick for multiplying by 10 is to write the number and then put a zero after it. So, 3 becomes 30.

Practice Questions

Try It Yourself

QUESTION: If one auto-rickshaw ride costs Rs 10, how much will 3 such rides cost? | ANSWER: Rs 30

QUESTION: A gardener plants 10 marigold flowers in each row. If he makes 3 full rows, how many marigold flowers has he planted in total? | ANSWER: 30 flowers

QUESTION: You have 3 friends, and each friend gives you 10 cricket stickers. If you already had 5 stickers, how many do you have now? | ANSWER: 35 stickers (3x10 = 30, then 30+5 = 35)

MCQ

Quick Quiz

Which of these is the correct way to calculate 3 × 10?

3 + 10

10 + 10 + 10

3 + 3 + 3 + 3 + 3 + 3 + 3 + 3 + 3 + 3

10 - 3

The Correct Answer Is:

Option B (10 + 10 + 10) correctly shows 10 being added 3 times, which is the definition of 3 × 10. Options A and D are addition and subtraction, while C shows 3 added 10 times, which is 10 × 3.

Real World Connection

In the Real World

When you buy 3 packets of 'Parle-G' biscuits, and each packet costs Rs 10, the shopkeeper quickly calculates 3 × 10 to tell you the total price of Rs 30. Similarly, if you earn Rs 10 for every chore you do, and you do 3 chores, you can instantly know you earned Rs 30.

Key Vocabulary

Key Terms

MULTIPLICATION: A way to find the total of equal groups | 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 with 3 × 10! Now you're ready to explore other multiplication tables like 4 × 10 or even 3 × 20. Understanding these will help you solve bigger problems faster and become a maths wizard!