Addition with Regrouping for Class 2: A Complete Guide

Addition with regrouping for Class 2 helps young learners add two-digit numbers confidently when the ones digits total 10 or more by teaching the column method with carrying (regrouping). This lesson shows students how to align numbers vertically, add the ones first, form a ten from the ones and carry it to the tens column, and then add the tens, including the carried ten. In this guide, you will learn how to set up column addition problems correctly, decide when regrouping is needed, perform carrying using drawings, practise with worksheets and real‑life scenarios, and build fluency for later three‑digit addition and subtraction with regrouping.

Table of Contents

• What Is Addition With Regrouping?
• Addition of a 2-Digit Number and a 1-Digit Number with Regrouping
• Addition of Two 2-Digit Numbers With Regrouping
• Addition of Three 2-Digit Numbers With Regrouping
• Facts of Addition With Regrouping
• Number Stories of Addition With Regrouping

What Addition With Regrouping?

When you add two numbers, sometimes the digits in the ones place add up to a number that is 10 or more. In that case, you can't fit both digits in a single column, so you need to regroup.

The golden rule of addition with regrouping is ‘When the sum of digits in any column is 10 or more, write the ones digit of that sum under that column and carry the tens digit to the next column on the left’.

Addition of a 2-digit number and a 1-digit number with Regrouping

Example 1: Add 38 and 5

You add a 2-digit number like 38 to a 1-digit number like 5. The ones add up to more than 9, so you need to carry.

Step 1: Ones

T O

1

3 8

+ 5

   3

8 + 5 = 13

Write 3, carry 1 to tens

Step 2: Tens

T O

1

3 8

+ 5

4 3

1 (carry) + 3 = 4

Write 4 in tens

So, 38 + 5 = 43

Example 2: Add 74 with 9.

Addition of Two 2-digit numbers With Regrouping

To add two 2-digit numbers. The process is the same, but both numbers have tens and ones digits to manage.

Example 1: Add 59 and 26

Example 2: Add 56 with 65.

Addition of Three 2-digit numbers With Regrouping

Adding three numbers follows the same steps: just add all three ones digits together first. If the sum is 10 or more, carry as usual.

Example 1: Add 29, 42 and 75

Example 2: Add 95 + 57 + 62

Facts of Addition With Regrouping

Here are a few facts of addition with regrouping that help save a lot of time.

• Adding 1

When you add 1 to any number, you get the very next number.

49 + 1 = 50, 99 + 1 = 100

• Adding 10

The ones digit stays the same; the tens digit goes up by 1.

95 + 10 = 105, 67 + 10 = 77

• Order of Addition

You can add numbers in any order. The answer will stay the same

28 + 53 = 53 + 28 = 81

 

Number stories of Addition With Regrouping

Question 1: Meera has 15 cards, Jason has 36 cards and Rima has 25 cards. How many cards do they have in all?

Solution:

Number of cards with Meera = 15

Number of cards with Jason = 36

Number of cards with Rima = 25

H   T   O

      1

      1 5

      3 6

+   2 5

─────

     7 6

Ones: 5 + 6 + 5 = 16; write 6, carry 1

Tens: 1 + 1 + 3 + 2 = 7

Total number of cards = 76 cards

Question 2: Ankit has 96 fish in his tank. His mother added 14 more fish. How many fish are there in the tank now?

Solution:

  T   O

   1

   9 6

+ 1 4

───

1 1 0

Ones: 6 + 4 = 10; write 0, carry 1

Tens: 1 + 9 + 1 = 11; write 1, carry 1 to hundreds

Total number of fish in the tank = 110 fish

Here's a set of questions for practice. Solve them in a notebook with a proper layout.

Worksheet on Addition With Regrouping for Class 2