Significant Figures after Calculation Addition

Description:

In the operations of addition and subtraction of two numbers, the result will carry as many figures after decimal as many are there with minimum digits after decimal i.e. in addition or subtraction, the final result should retain as many decimal places as are there in the number with the least decimal places.

Example

• Addition

  When we add two measurements 12.2 and 1302.56, we get 1314.76 as the answer but the minimum decimal digit in the two measurements is 1 (12.2), so we will round off our answer to only 1 decimal place i.e. 1314.8

• Substraction

  When we find the difference of two measurements 13.12 and 9.056, as the minimum decimal digit in the two measurements is 2 (13.12), so we will round off the other measurement to 2 decimal places i.e. 9.06 and then we will perform subtraction and it given 4.06 as the answer.