What is The Number 47?

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Grade Level:

Pre-School – Class 2

All domains without exception

Definition

What is it?

The number 47 is a natural number that comes after 46 and before 48. It is an odd number, which means it cannot be divided exactly by 2. It is also a prime number, meaning it can only be divided by 1 and itself.

Simple Example

Quick Example

Imagine you have 47 rupees in your piggy bank. If you want to buy a small toy that costs 45 rupees, you have enough money! You would have 2 rupees left over (47 - 45 = 2).

Worked Example

Step-by-Step

Let's find out how many groups of 10 we can make from 47. --- Step 1: We have the number 47. --- Step 2: We want to see how many tens are in 47. We know that 10 + 10 + 10 + 10 = 40. --- Step 3: So, we have 4 groups of ten (4 x 10 = 40). --- Step 4: Now, let's see what is left over: 47 - 40 = 7. --- Step 5: This means 47 has 4 tens and 7 ones. --- Answer: 47 has four tens and seven ones.

Why It Matters

Understanding numbers like 47 is fundamental to all of mathematics, from simple counting to complex algebra. It's used by software developers to count data, by engineers to measure things, and by financial analysts to calculate money. Every career uses numbers!

Common Mistakes

MISTAKE: Thinking 47 is an even number. | CORRECTION: 47 is an odd number because it ends with 7, which is an odd digit, and cannot be divided exactly by 2.

MISTAKE: Confusing 47 with 74. | CORRECTION: 47 has 4 tens and 7 ones, while 74 has 7 tens and 4 ones. The order of digits matters a lot!

MISTAKE: Believing 47 can be divided by numbers other than 1 and 47. | CORRECTION: 47 is a prime number, so it only has two factors: 1 and 47. It cannot be divided by 2, 3, 5, 7, etc., without leaving a remainder.

Practice Questions

Try It Yourself

QUESTION: Is 47 a prime number or a composite number? | ANSWER: Prime number

QUESTION: If you count backwards from 50, what is the third number you say before reaching 47? | ANSWER: 49 (50, 49, 48, 47)

QUESTION: Rahul has 47 cricket balls. He wants to put them into boxes, with 5 balls in each box. How many full boxes can he make, and how many balls will be left over? | ANSWER: 9 full boxes and 2 balls left over (47 divided by 5 is 9 with a remainder of 2)

MCQ

Quick Quiz

Which of the following statements about the number 47 is true?

It is an even number.

It is a composite number.

It is a prime number.

It has 7 tens and 4 ones.

The Correct Answer Is:

47 is a prime number because it can only be divided by 1 and 47. It is not even (ends in 7), not composite (only 2 factors), and has 4 tens and 7 ones.

Real World Connection

In the Real World

The number 47 appears in many everyday situations. For example, a bus route might be numbered 47, a mobile phone's battery percentage could be 47%, or a cricketer might score 47 runs in an important match. Even the number of items delivered in a large online grocery order could be 47!

Key Vocabulary

Key Terms

NATURAL NUMBER: A whole positive number (1, 2, 3...). | ODD NUMBER: A number that cannot be divided exactly by 2. | PRIME NUMBER: A number greater than 1 that has only two factors: 1 and itself. | DIGIT: A single symbol used to write numbers (0, 1, 2...9).

What's Next

What to Learn Next

Now that you understand what the number 47 is, you can explore other types of numbers like composite numbers, square numbers, and triangular numbers. This will help you build a stronger foundation for all future math topics!