Class 1 Exam  >  Class 1 Notes  >  Mathematics for Class 1: NCERT  >  Chapter Notes: Addition

Addition Class 1 Notes Maths Chapter 3

What is Addition? 

An addition is the process of finding the total or sum by combining of two numbers, digits or values. 

  • Counting things together is called addition.
  • The words total, sum, add, more, in all, altogether etc., mean addition.
  • The symbol for addition is +, read as plus.
  • The answer we get by adding two numbers is called sum.

Addition Class 1 Notes Maths Chapter 3

Addition by Counting Forward

To add 6 and 3, we start from 6 and count forward by 3 as:
Addition Class 1 Notes Maths Chapter 3We reach at 9. So, 6 + 3 = 9.

EduRev Tips: It is easy to add if we start from the bigger number while doing addition by counting forward.

How Many Altogether?

Addition Class 1 Notes Maths Chapter 3

Addition Class 1 Notes Maths Chapter 3

Addition of Two Single Digit Number

Horizontal Addition

Adding numbers by writing them in a line (across) is called horizontal addition.

Example 1: 

Addition Class 1 Notes Maths Chapter 3

Example 2:

Addition Class 1 Notes Maths Chapter 3

Vertical Addition

Adding numbers by writing them one below the other (down) is called vertical addition.

Example 1:

Addition Class 1 Notes Maths Chapter 3

Example 2:

Addition Class 1 Notes Maths Chapter 3

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Chapter Notes: Addition
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Adding 0 to a number

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Addition Class 1 Notes Maths Chapter 3

When we add 0 to a number, the sum is the number itself. 

Add and Match

Addition Class 1 Notes Maths Chapter 3
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Addition Class 1 Notes Maths Chapter 3

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Writing the Missing Numerals

Addition Class 1 Notes Maths Chapter 3

Addition Class 1 Notes Maths Chapter 3

The document Addition Class 1 Notes Maths Chapter 3 is a part of the Class 1 Course Mathematics for Class 1: NCERT.
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