From the previous session, we know how to add 2 two-digit numbers.
In this page, let's see about adding numbers with regrouping (carrying over). It is similar to the simple addition which we learnt in the previous math section.
Let's see how to add 37 and 26.
Arrange the two numbers as below (one below the other), before adding.
As the rule, we have to work on the digits in 'ones' column first i.e., we have to add 7 add 6. Do you get 13? So far, so good.
Now, we cannot write 13 in ‘ones’ column. Write the number 3 in ones column and bring the remaining 1 to the ‘tens’ column.
Write 1 above 3 in the 'tens' column as shown below. This is what we call as regrouping (carrying over).
The next step in this math problem is to add the two digits in 'tens' column. Adding 3 and 2, we get 5. Now add the carry over 1 along with the 5. So 5+1=6. Write number 6 in the 'tens' column.
Thus we got the answer 37+26=63.
Addition with regrouping is made easy here.