Mathematics Class 2 - Computation Operations Notes

Computation Operations

Welcome to the chapter on Computation Operations for Class 2. In this chapter, you will learn about the basic math operations: addition, subtraction, multiplication, and division. By the end of this chapter, you will be able to solve simple problems using these operations!

Introduction

Computation operations help us solve math problems. The main operations are addition, subtraction, multiplication, and division.

Addition

Addition means putting things together to find the total.

• 3 + 2 = 5
• 7 + 1 = 8

Subtraction

Subtraction means taking away to find what is left.

• 5 - 2 = 3
• 8 - 4 = 4

Multiplication

Multiplication means adding the same number again and again.

• 2 × 3 = 6
• 4 × 2 = 8

Division

Division means sharing or splitting into equal parts.

• 6 ÷ 2 = 3
• 8 ÷ 4 = 2

Fun Activity: Operation Cards!

Make cards with numbers and operation signs (+, -, ×, ÷). Mix them and solve the problems you create!

Summary

• Addition: Put together
• Subtraction: Take away
• Multiplication: Add again and again
• Division: Share equally

Practice Questions

1. What is 4 + 3?
2. What is 9 - 5?
3. What is 2 × 4?
4. What is 8 ÷ 2?
5. Circle the operation sign for multiplication.

Challenge Yourself

• Write two word problems using addition and subtraction.
• Draw a picture to show division.

Did You Know?

• Multiplication is a shortcut for repeated addition!
• Division helps us share things equally.

Glossary

• Addition (+): Putting together
• Subtraction (-): Taking away
• Multiplication (×): Adding again and again
• Division (÷): Sharing equally

Answers to Practice Questions

1. 7
2. 4
3. 8
4. 4
5. ×

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Practice computation operations every day to become a math star!