What is 12 + 12?

S1-SA1-1205

Grade Level:

Class 2

Maths, Computing, AI

Definition

What is it?

12 + 12 means adding the number 12 to itself. It is a basic addition problem where we combine two groups of 12 items to find the total number of items.

Simple Example

Quick Example

Imagine you have two cricket teams, and each team has 12 players. If you want to know the total number of players in both teams combined, you would calculate 12 + 12.

Worked Example

Step-by-Step

Let's add 12 + 12 using a simple method:

Step 1: Write the numbers one below the other, aligning the ones place and the tens place.
12
+ 12
----

Step 2: Start adding from the ones place (the rightmost digits).
2 (from the first 12) + 2 (from the second 12) = 4.
Write 4 in the ones place of the answer.
12
+ 12
----
4

Step 3: Now, add the tens place digits.
1 (from the first 12) + 1 (from the second 12) = 2.
Write 2 in the tens place of the answer.
12
+ 12
----
24

So, 12 + 12 = 24.

Why It Matters

Basic addition like 12 + 12 is the building block for all advanced calculations in Maths, Computing, and AI. Engineers use addition to design strong bridges, programmers use it to write code for apps, and AI systems use it for complex calculations in self-driving cars or medical diagnoses. Mastering it helps you build a strong foundation for future careers!

Common Mistakes

MISTAKE: Adding the digits incorrectly, like 1+1=1 and 2+2=2, getting 12 instead of 24. | CORRECTION: Always remember to add the digits in each place value correctly: 1+1=2 and 2+2=4.

MISTAKE: Forgetting to carry over when adding larger numbers (though not needed for 12+12, it's a common addition mistake). | CORRECTION: If the sum of digits in a place value is 10 or more, write the ones digit and 'carry over' the tens digit to the next place value.

MISTAKE: Confusing addition with multiplication. Thinking 12 + 12 is the same as 12 x 12. | CORRECTION: Addition ( + ) means combining groups, while multiplication ( x ) means repeated addition of the same number (e.g., 12 x 2 is 12 + 12).

Practice Questions

Try It Yourself

QUESTION: Your friend has 12 toffees and you have 12 toffees. How many toffees do you have together? | ANSWER: 24 toffees

QUESTION: A bus has 12 seats on the left side and 12 seats on the right side. What is the total number of seats? | ANSWER: 24 seats

QUESTION: Riya bought two packets of bindis. Each packet has 12 bindis. If she uses 4 bindis, how many are left? | ANSWER: First, find total bindis: 12 + 12 = 24. Then subtract 4: 24 - 4 = 20 bindis left.

MCQ

Quick Quiz

What is the sum of 12 and 12?

The Correct Answer Is:

When you add 12 to 12, you combine the two numbers. Adding the ones digits (2+2) gives 4, and adding the tens digits (1+1) gives 2. So, the total is 24.

Real World Connection

In the Real World

When you use a mobile recharge app, if you recharge for ₹12 twice, the app's system adds 12 + 12 to show your total recharge value as ₹24. Similarly, a shopkeeper calculates 12 + 12 to know the total cost if you buy two items costing ₹12 each.

Key Vocabulary

Key Terms

ADDITION: The process of combining numbers to find their total | SUM: The result obtained when numbers are added | PLACE VALUE: The value of each digit in a number based on its position (ones, tens, hundreds) | DIGIT: A single symbol used to make numbers (0, 1, 2, 3, 4, 5, 6, 7, 8, 9)

What's Next

What to Learn Next

Now that you understand basic addition, you can move on to adding larger numbers with carrying over. This will help you solve more complex problems and build a stronger foundation for understanding multiplication and division.