Mathematics · Class 1
Addition
Learn Addition with notes, examples, and practice questions.
3 sections15–25 min read5 MCQs · 2 examples
Chapter Overview
The plus sign (+) means add or put together. The equals sign (=) means the same value as.
Addition means putting groups together to find how many there are in all. Children practise addition through objects, pictures, fingers, number bonds, and movement on a number line.
Ways to Add
- Join two groups and count all the objects.
- Start with the larger number and count on.
- On a number line, addition means jumping to the right.
- A number bond shows two parts that make one whole.
Useful Addition Facts
- Adding zero does not change a number: 5 + 0 = 5.
- Adding one gives the next number: 6 + 1 = 7.
- The order can change without changing the total: 2 + 3 = 3 + 2.
- Words such as in all, altogether, total, and combined often tell us to add.
Solved Examples
Step-by-step solutions — read each step before checking the final answer.
Putting Groups Together
Mina has 4 pencils and gets 3 more. How many pencils does she have altogether?
- 1Begin with 4 pencils.
- 2Count on 3 more: 5, 6, 7.
- 3Write the number sentence 4 + 3 = 7.
Answer
7 pencils
Missing Part
Complete 5 + __ = 8.
- 1Start at 5.
- 2Count on until 8: 6, 7, 8.
- 3Three counts were needed.
Answer
3
Key Points to Remember
- ✓ Addition joins parts to make a total
- ✓ Count on to add efficiently
- ✓ Adding zero keeps the number unchanged
- ✓ The order of two addends does not change the sum
Exam Tips
- • Draw dots when a sum feels difficult
- • Circle words such as total or altogether
- • Check by counting the complete group once more
Practice MCQs — Addition
Test your understanding with topic-wise multiple choice questions. Explanations appear after each answer.
Question 1 of 5Score: 0/0
What is 3 + 4?