What is 4 × 10?

S1-SA1-0685

Grade Level:

Class 2

Maths, Computing, AI

Definition

What is it?

4 × 10 means adding the number 10, four times. It's a basic multiplication problem that helps us quickly find the total when we have equal groups.

Simple Example

Quick Example

Imagine you have 4 friends, and each friend gives you 10 rupees for a movie ticket. To find out the total money you collected, you would calculate 4 × 10 rupees.

Worked Example

Step-by-Step

Let's find out what 4 × 10 is:
1. Multiplication is a quick way to do repeated addition.
2. So, 4 × 10 means adding 10 to itself 4 times.
3. We can write it as: 10 + 10 + 10 + 10
4. First, 10 + 10 = 20
5. Then, 20 + 10 = 30
6. Finally, 30 + 10 = 40
7. So, 4 × 10 = 40.
Answer: 40

Why It Matters

Understanding multiplication like 4 × 10 is key for many things, from managing money to designing apps. Scientists use it to calculate data, and engineers use it for building structures. Even game developers use it to score points!

Common Mistakes

MISTAKE: Adding 4 and 10 to get 14 | CORRECTION: Remember that '×' means multiplication (repeated addition), not addition. So, it's 10 + 10 + 10 + 10, not 4 + 10.

MISTAKE: Confusing the order, thinking it's 10 groups of 4 | CORRECTION: While 10 × 4 also gives 40, for 4 × 10, it's usually easier to think of 4 groups of 10. Both lead to the same answer.

MISTAKE: Forgetting to carry over in larger multiplications | CORRECTION: While not directly applicable to this simple problem, always remember place values and carrying over when multiplying numbers with more digits.

Practice Questions

Try It Yourself

QUESTION: If one cricket bat costs 10 rupees, how much would 4 such bats cost? | ANSWER: 40 rupees

QUESTION: A bus travels 10 kilometers in one hour. How many kilometers will it travel in 4 hours if it maintains the same speed? | ANSWER: 40 kilometers

QUESTION: You have 4 packets of biscuits. Each packet has 10 biscuits. If you eat 5 biscuits from one packet, how many biscuits are left in total? | ANSWER: 35 biscuits (4x10 = 40, then 40-5 = 35)

MCQ

Quick Quiz

What is the result of 4 multiplied by 10?

410

104

The Correct Answer Is:

Multiplying 4 by 10 means adding 10 four times (10+10+10+10), which equals 40. Options A, C, and D are incorrect as they represent addition or incorrect concatenation.

Real World Connection

In the Real World

When you buy 4 samosas, and each costs 10 rupees, the shopkeeper quickly calculates 4 × 10 = 40 rupees using this basic math. Similarly, delivery apps like Zomato or Swiggy use multiplication to calculate total costs for multiple items in your order.

Key Vocabulary

Key Terms

MULTIPLICATION: A mathematical operation that is equivalent to adding a number to itself a specified number of times | PRODUCT: The result of a multiplication problem | TIMES: Another word for 'multiplied by' | REPEATED ADDITION: Adding the same number multiple times, which multiplication simplifies

What's Next

What to Learn Next

Once you understand simple multiplications like 4 × 10, you can move on to multiplying larger numbers and learning about multiplication tables. This will help you solve even bigger problems faster!