Addition

In this chapter, the students will learn about class 2 addition. They will learn about the term’s addends, addition sign, and sum.

In this learning concept, the students will learn:

• Horizontal Addition
• Vertical Addition

Each concept is explained to class 2 maths students using illustrations, examples, misconceptions, and mind maps. You can assess your learning by solving the two printable worksheets at the pages' end.
Download the addition worksheet for class 2 and check the solutions for the concept of addition provided in PDF format.

Addition- To find a total or count the objects together we use addition.

1. Parts of Addition

   • Addends: The numbers we add
   • + (Plus): Addition sign
   • Sum: Total after doing addition

   Example:

   
   

   We have learned the addition of one-digit numbers. Now we will learn the addition of the two-digits numbers.

   Example:

   There are 12 matchsticks and we need to add 22 matchsticks to it.

   Count the total number of matchsticks.

   
   

   A bundle of ten matchsticks represents the 1 ten and two individual matchsticks represent 2 ones. It makes number 12.

   
   

   Similarly, two bundles of ten matchsticks represent the 2 tens and two individual matchsticks represent 2 ones. It makes number 22.

   Now, we want to count all these matchsticks together.

   Put all the bundles together and individual matchsticks together.

   
   

   Three bundles of ten matchsticks represent 3 tens and four individual matchsticks represent 4 ones. It makes number 34.

   So, the sum of the numbers 12 and 22 is 34:

   12 + 22 = 34

   Note:

   • Here we add the numbers at the ones place and the numbers at tens place separately.
   • While doing addition always start by adding ones place numbers.(From right to left)

2. Representation of the Addition

• Horizontal Addition

  Step 1: Write the numbers horizontally connected with plus sign.

  Step 2: Add the ones place numbers.

  Step 3: Add the tens place numbers.

  Example:

  
  

  Step 1: Write the numbers horizontally.

  
  

  Step 2: Add the ones place numbers.

  Here, the first addend at ones place is the number 4, and the second addend at ones place is 5. Add the 4 and 5.

  
  

  Step 3: Add the tens place numbers.

  Here, the first addend at tens place is 2, and the second addend at tens place is 7. Add 2 and 7.

  
  

  So, we get

  
• Vertical Addition

  (To do vertical addition we use place value tables.)

  Step 1: Write the numbers in place value tables correctly.

  Step 2: Add the ones place numbers.

  Step 3: Addition the tens place numbers.

  Example:

  
  

  Step 1: Write the numbers in place value tables correctly. On the write the representation for the numbers is shown.

       

  Step 2: Add the numbers at ones place.

  
       

  Step 3: Add the numbers at tens place.

       

  So, we get:

  

3. Addition with Carryover

   Example:

   
   

   Step 1: Write the numbers in place value tables correctly.

   
   

   Step 2: Add the numbers at ones place.

   When we add 5 and 7, we get 12. But we can’t write the two-digit number at the ones place.

   
   

   Step 3: Carry over the tens place number of the sum to the next place that is tens place.

   Out of 12 ones, we can make a group of 10 flowers which is 1 ten. So, 2 flowers are remaining which indicates 2 ones.

   
   

   Step 4: Add the numbers at tens place. (Including the carry over number also)

   
   

   So, we get

   

Misconception in Addition:

• Write the one-digit numbers at Ones place always.