Olympiads are competitions that are held to promote and encourage the intellectual development of students. These competitions are designed to challenge students and encourage them to push their boundaries in various academic fields, such as science, mathematics, language, and social studies.

Olympiads are typically organized at the regional, national, and international levels, and they provide students with the opportunity to compete with their peers from around the world. Participating in these competitions can help students develop critical thinking skills, problem-solving abilities, and a deep understanding of the subjects they are studying. That being said, this article will discuss the detailed notes on IMO Class 2 Chapter 1: Addition and Subtraction.

Participating in an Olympiad exam for class 2 at the national or international level can lead to academic success for students and is valued globally. Winners of national competitions not only get to represent India at the international level, but they also get scholarships and other opportunities.

As a result, at ‘School Connect Online,’ you can find a comprehensive set of solutions ranging from Olympiad sample papers for class 2, previous year question papers and exam formats, marking scheme, syllabus, and more that will assist class 2 students in preparing, scoring, and performing well in any of the Olympiad exams.

While many students take this exam to prove their worth and join the elite group, they must prepare thoroughly. There are also many Olympiad books for class 2 that are readily available and can be used as a reference.

On a side note, just so you know, there are different types of Olympiad exams for students, such as the math Olympiad for class 2 and the science Olympiad.

There are also international Olympiad exams held by various independent organizations. These exams, in particular, provide students with valuable exposure because they allow them to experience the competitiveness that exists and learn to face new challenges.

Overall, these are some of the most important talent search examinations held in India. These exams aid in the selection of some of the best students.

Class 2 Math syllabus covers topics that assist students in learning new concepts that cannot be taken for granted. It is critical to understand these new concepts because they serve as the foundation for the following topics or higher classes. The CBSE Class 2 Math syllabus for the academic year 2022-2023 is designed in such a way that students will find it very effective and interesting to learn. Knowing the CBSE syllabus will help them understand what they will study during that academic year.

**IMO Class 2 Chapter 1: Addition and Subtraction detailed notes**

Addition is one of the basic arithmetic operations that involves adding two or more numbers together. In 2-digit addition, we add two numbers that each have two digits.

Steps for 2-digit addition:

Step 1: Write the two numbers to be added in a vertical column, with the ones place digits aligned.

Step 2: Add the ones place digits together, and write the sum below the line.

Step 3: If the sum of the ones place digits is greater than or equal to 10, carry the tens place digit over to the next column.

Step 4: Add the tens place digits together, along with any carried over digits from the ones place, and write the sum below the line.

Step 5: The final result is the sum of the two original numbers.

### Example

Let’s take an example of adding 34 and 28.

Step 1: Write the numbers vertically, aligned by the ones place.

Step 2: Add the ones place digits together, which are 4 and 8. The sum is 12, so write 2 below the line and carry over 1 to the tens place.

Step 3: Add the tens place digits together, along with any carried over digits from the ones place, which are 3, 2, and 1. The sum is 6, so write 6 below the line.

Step 4: The final result is 62, which is the sum of 34 and 28.

**Primary Subtraction**

Subtraction is an arithmetic operation that involves taking away a number from another number. In primary subtraction, we subtract one-digit numbers from two-digit numbers.

Steps for primary subtraction:

Step 1: Write the two numbers to be subtracted in a vertical column, with the ones place digits aligned.

Step 2: Subtract the ones place digit of the second number from the ones place digit of the first number, and write the difference below the line.

Step 3: If the ones place digit of the second number is greater than the ones place digit of the first number, borrow 1 from the tens place digit of the first number.

Step 4: Subtract the tens place digit of the second number from the tens place digit of the first number, along with any borrowed digits, and write the difference below the line.

Step 5: The final result is the difference of the two original numbers.

### Example

Let’s take an example of subtracting 17 from 35.

Step 1: Write the numbers vertically, aligned by the ones place.

Step 2: Subtract the ones place digit of the second number (7) from the ones place digit of the first number (5). The difference is 8, so write 8 below the line.

Step 3: Since the ones place digit of the second number is greater than the ones place digit of the first number, borrow 1 from the tens place digit of the first number (3).

Step 4: Subtract the tens place digit of the second number (1) from the tens place digit of the first number (2), along with the borrowed digit (1). The difference is 0, so write 0 below the line.

Step 5: The final result is 18, which is the difference of 35 and 17.

Benefits of Math Olympiad

- Math Olympiad can improve the problem-solving skills of Class 2 students.
- Participating in Math Olympiad can enhance the critical thinking abilities of Class 2 students.
- Math Olympiad can boost the self-confidence of Class 2 students.
- Math Olympiad can encourage Class 2 students to strive for excellence in mathematics.
- Participating in Math Olympiad can make learning mathematics more engaging and enjoyable for Class 2 students.

School Connect Online offers Olympiads such as:

1.National Science Olympiad (NSO)

2. International Mathematics Olympiad (IMO)

4.Artificial Intelligence Olympiad.

Prepare for your Olympiad coaching with the Olympiad Genius by interacting with one of the greatest educators from IIT, NIT, as well as other institutions!

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