What is a Number Fact for 4?

S0-SA1-1401

Grade Level:

Pre-School – Class 2

All domains without exception

Definition

What is it?

A number fact for 4 is a math equation that shows how different numbers can combine to make 4. These facts involve addition, subtraction, multiplication, and division, all resulting in or using the number 4.

Simple Example

Quick Example

Imagine you have 4 ladoos. You can think of this as 2 ladoos + 2 ladoos. So, '2 + 2 = 4' is a number fact for 4. It shows how numbers come together to make 4.

Worked Example

Step-by-Step

Let's find some addition facts for 4.

Step 1: Start with 0. What do you add to 0 to get 4? 0 + 4 = 4.
---Step 2: Try with 1. What do you add to 1 to get 4? 1 + 3 = 4.
---Step 3: Try with 2. What do you add to 2 to get 4? 2 + 2 = 4.
---Step 4: Try with 3. What do you add to 3 to get 4? 3 + 1 = 4.
---Step 5: Try with 4. What do you add to 4 to get 4? 4 + 0 = 4.

Answer: Some addition facts for 4 are 0+4=4, 1+3=4, 2+2=4, 3+1=4, and 4+0=4.

Why It Matters

Understanding number facts helps you do mental math faster and solve bigger problems easily. This skill is crucial for careers in finance, like a bank manager calculating interest, or for engineers designing structures, where quick calculations are daily tasks.

Common Mistakes

MISTAKE: Only thinking of addition facts for 4, like 2+2=4. | CORRECTION: Remember number facts also include subtraction (like 4-0=4), multiplication (like 1x4=4), and division (like 8/2=4).

MISTAKE: Mixing up number facts for different numbers, e.g., saying 2+3=4. | CORRECTION: Always check that the equation truly results in the number you are focusing on (in this case, 4). 2+3 is a fact for 5, not 4.

MISTAKE: Forgetting that the order in addition doesn't change the answer (commutative property). | CORRECTION: 1+3=4 is a fact, and so is 3+1=4. Both are correct and important to know.

Practice Questions

Try It Yourself

QUESTION: Which of these is an addition fact for 4: a) 1+2=3, b) 1+3=4, c) 2+3=5 | ANSWER: b) 1+3=4

QUESTION: Write one subtraction fact for 4 using the numbers 5 and 1. | ANSWER: 5 - 1 = 4

QUESTION: A cricket team scored 4 runs in an over. If two batsmen scored equal runs, what could be a multiplication fact for 4 showing this? | ANSWER: 2 x 2 = 4

MCQ

Quick Quiz

Which of the following is NOT a number fact for 4?

4 + 0 = 4

8 / 2 = 4

2 + 3 = 5

1 x 4 = 4

The Correct Answer Is:

Option C (2 + 3 = 5) results in 5, not 4, so it is not a number fact for 4. The other options all result in 4.

Real World Connection

In the Real World

When you share 4 pieces of mithai equally among 2 friends, each friend gets 2 pieces (4 / 2 = 2). Or if you are checking your mobile data and see you have 4 GB left, you might think of it as 2 GB for morning and 2 GB for evening (2 + 2 = 4).

Key Vocabulary

Key Terms

FACT: a true statement or equation | ADDITION: combining numbers (+) | SUBTRACTION: taking one number away from another (-) | MULTIPLICATION: repeated addition (x) | DIVISION: splitting into equal parts (/)

What's Next

What to Learn Next

Great job learning about number facts for 4! Next, you can explore number facts for other numbers like 5 or 10. This will strengthen your number sense and prepare you for more complex math problems like solving equations.