In the column method, the numbers to be added or subtracted are set out above one another in columns.
Let’s learn about it with the help of an example –
Step 1 – Arrange the numbers above one another in columns.
The bigger number is to be written at the top.
Step 2 – Start subtracting numbers from the right side i.e., ‘ones’ to the first column i.e., ‘ones’.
As we cannot take away 6 ones 5 ones, we will exchange 1 ten for 10 ones.
255 – 146 = 109
Let's try a question:
A car company manufactures 355 cars. Out of which 168 cars were found defective. What is the remaining number of cars which are not defective?
Total cars manufactured = 355
Cars found defective = 168
Remaining cars not defective = 355 – 168 = 18