CLASS-2
DOUBLE DIGIT ADDITION WITH REGROUPING VIA EXPLANATION

Step 1.- Add the ‘Ones’

8 Ones + 7 Ones = 15 Ones

15 Ones = 1 Ten 5 Ones

Write 5 in the ‘ Ones’ column and take 1 Ten at the top of ‘Tens’ column

Step 2.- Add the ‘Tens’

1 Ten + 3 Tens + 2 Tens  = 6 Tens.

Write 6 Tens to the ‘ Tens’ Column

So, the answer is 65     (Ans.).

Q.2)   Add 49 & 44.

Step 1.- Add the ‘Ones’

9 Ones + 4 Ones = 13 Ones

13 Ones = 1 Ten 3 Ones

Write 3 Ones in the ‘Ones’ column and take 1 Ten at the top of ‘Tens’ column.

Step 2.- Add the ‘Tens’

1 Ten + 4 Tens + 4 Tens = 9 Tens.

Write 9 Tens to the ‘Tens’ Column

 So, the answer is 93 .    (Ans.)

Q.3)   Add 36 & 45.

Step 1.- Add the ‘Ones’

6 Ones + 5 Ones = 11 Ones

11 Ones = 1 Ten 1 One.

Write 1 One in the ‘Ones’ column and take 1 Ten at the top of ‘Tens’ column

Step 2.- Add the ‘Tens’

1 Ten + 3 Tens + 4 Tens = 8 Tens.

Write 8 Tens to the ‘ Tens’ Column

So, the answer is 81 .     (Ans.)

Q.4)   Add 29 & 37.

Step 1.- Add the ‘Ones’

9 Ones + 7 Ones = 16 Ones

16 Ones = 1 Ten 6 Ones.

Write 6 Ones in the ‘Ones’ column and take 1 Ten at the top of ‘Tens’ column.

Step 2.- Add the ‘Tens’

1 Ten + 2 Tens + 3 Tens  = 6 Tens.

Write 6 Tens to the ‘Tens’ Column

So, the answer is 66 .       (Ans.)

Q.5)   Add 27 & 13.

Step 1.- Add the ‘Ones’

7 Ones + 3 Ones = 10 Ones

10 Ones = 1 Ten 0 One.

Write 0 One in the ‘Ones’ column and take 1 Ten at the top of ‘Tens’ column.

Step 2.- Add the ‘Tens’

1 Ten + 2 Tens + 1 Ten  = 4 Tens.

Write 4 Tens to the ‘ Tens’ Column

          So, the answer is 40 .     (Ans.)