What is 4 × 7?

S1-SA1-0682

Grade Level:

Class 3

Maths, Computing, AI

Definition

What is it?

4 × 7 means adding the number 7 to itself, 4 times. It is a way to quickly calculate the total when you have 4 groups, and each group has 7 items.

Simple Example

Quick Example

Imagine you have 4 friends, and each friend wants 7 ladoos. To find out how many ladoos you need in total, you can multiply 4 by 7. This tells you the total number of ladoos quickly.

Worked Example

Step-by-Step

Let's find the value of 4 × 7 using repeated addition.

---Step 1: Understand what 4 × 7 means. It means adding the number 7, four times.

---Step 2: Start adding the first two 7s: 7 + 7 = 14.

---Step 3: Now add the third 7 to the sum: 14 + 7 = 21.

---Step 4: Finally, add the fourth 7 to the sum: 21 + 7 = 28.

---Answer: So, 4 × 7 = 28.

Why It Matters

Multiplication is a basic skill used in everyday life and in advanced fields like Computing and AI. Knowing your multiplication tables helps you solve problems faster, whether you're calculating costs in a shop or designing complex algorithms for a self-driving car.

Common Mistakes

MISTAKE: Confusing multiplication with addition, e.g., thinking 4 × 7 is 4 + 7. | CORRECTION: Remember, multiplication is repeated addition. 4 × 7 is 7 + 7 + 7 + 7, not just 4 + 7.

MISTAKE: Forgetting multiplication tables and trying to count on fingers every time. | CORRECTION: Practice your multiplication tables regularly. Knowing them by heart makes calculations much faster and easier.

MISTAKE: Getting confused by the order of numbers, e.g., thinking 4 × 7 is different from 7 × 4. | CORRECTION: The order doesn't matter in multiplication. 4 × 7 gives the same answer as 7 × 4 (Commutative Property).

Practice Questions

Try It Yourself

QUESTION: A rickshaw puller earns Rs. 7 for each short trip. If he does 4 such trips, how much money does he earn? | ANSWER: Rs. 28

QUESTION: If you have 4 boxes, and each box contains 7 pencils, what is the total number of pencils? | ANSWER: 28 pencils

QUESTION: A tailor stitches 7 buttons on one shirt. If he stitches buttons on 4 shirts, and then takes a break, how many buttons has he stitched so far? | ANSWER: 28 buttons

MCQ

Quick Quiz

Which of the following expressions is equal to 4 × 7?

4 + 7

7 + 7 + 7 + 7

4 + 4 + 4 + 4 + 4 + 4 + 4

4 - 7

The Correct Answer Is:

4 × 7 means adding 7 to itself 4 times, which is 7 + 7 + 7 + 7. Option C is also correct (7 times 4), but Option B directly shows 4 groups of 7.

Real World Connection

In the Real World

From calculating the total cost of 4 packets of biscuits each costing Rs. 7 at a local kirana store, to a data analyst at a cricket match quickly figuring out how many runs a batsman scored if they hit 4 boundaries (fours), multiplication is used everywhere. Even mobile apps like UPI use multiplication for calculating totals in transactions.

Key Vocabulary

Key Terms

MULTIPLICATION: A way to find the total when you combine equal groups | PRODUCT: The answer to a multiplication problem | FACTORS: The numbers you multiply together | REPEATED ADDITION: Adding the same number multiple times | TIMES TABLES: A list of multiplication facts for a specific number.

What's Next

What to Learn Next

Great job understanding 4 × 7! Next, you should explore other multiplication facts and learn how to multiply larger numbers. This will build a strong foundation for division and solving more complex math problems.