# CLASS-3FOUR DIGIT ADDITION WITH REGROUPING

METHOD -

9 Ones +  8 Ones = 17 Ones

17 Ones = 1 ‘Ten’ 7 ‘Ones’

Write 7 in the ‘Ones’ column and take 1 Ten to the ‘Tens’ column

1 Ten (Carried over) + 5 Tens + 9 Tens = 15 ‘Tens’

15 Tens = 1 Hundred 5 Tens

Write 5 in the ‘Tens’ column and take 1 To the

The ‘ Hundred’ column.

1 Hundred (Carried over)  + 7 Hundreds + 7 Hundreds

= 15 Hundreds = 1 Thousand 5 Hundreds

Write 5 in the ‘Hundreds’ column.

Take 1 Thousand to the ‘Thousands’ column.

1 Thousand (Carried over)  + 3 Thousands + 5 Thousands

= 9 Thousands

So, the answer is 9557     (Ans.)

METHOD -

5 Ones +  7 Ones = 12 Ones

12 Ones = 1 ‘Ten’ 2 ‘Ones’

Write 2 in the ‘Ones’ column and take 1 Ten to the ‘Tens’ column.

1 Ten (Carried over) + 8 Tens + 8 Tens = 17 ‘Tens’

17 Tens = 1 Hundred 7 Tens

Write 7 in the ‘Tens’ column and take 1 To the

The ‘ Hundred’ column.

1 Hundred (Carried over)  + 6 Hundreds + 9 Hundreds

= 16 Hundreds = 1 Thousand 6 Hundreds

Write 6 in the ‘Hundreds’ column.

Take 1 Thousand to the ‘Thousands’ column

1 Thousand (Carried over) + 4 Thousands + 3 Thousands

= 8 Thousands

So, the answer is 8672     (Ans.)

METHOD -

7 Ones +  6 Ones = 13 Ones

13 Ones = 1 ‘Ten’ 3 ‘Ones’

Write 3 in the ‘Ones’ column and take 1 Ten to the ‘Tens’ column.

1 Ten (Carried over) + 5 Tens + 4 Tens = 10 ‘Tens’

10 Tens = 1 Hundred 0 Tens

Write 0 in the ‘Tens’ column and take 1 To the

The ‘ Hundred’ column.

1 Hundred (Carried over) + 4 Hundreds + 8 Hundreds

= 13 Hundreds = 1 Thousand 3 Hundreds

Write 3 in the ‘Hundreds’ column.

Take 1 Thousand to the ‘Thousands’ column.

1 Thousand (Carried over)  + 6 Thousands + 2 Thousands

= 9 Thousands

So, the answer is 9303      (Ans.)

METHOD -

5 Ones +  9 Ones = 14 Ones

14 Ones = 1 ‘Ten’ 4 ‘Ones’

Write 4 in the ‘Ones’ column and take 1 Ten to the ‘Tens’ column.

1 Ten (Carried over) + 1 Ten + 4 Tens = 6 ‘Tens’

Write 6 in the ‘Tens’ column.

2 Hundreds + 6 Hundreds = 8 Hundreds.

Write 8 in the ‘Hundreds’ column.