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Determination of Significant figures in Mathematical Operations

We know that the precision is determined by least count of the measuring instrument, smaller the least count, greater is the precision. The precision of measurement can not be increased by the calculations. Significant figures in addition and subtraction: The result of addition and subtraction should retain as many decimal places as are in the number with the smallest number of decimal places. Example: 14.2m + 2.562m = 16.762m Result in significant figures after rounding off = 16.8m Difference: 14.2m - 2.562m = 11.638m Result in significant figures after rounding off = 11.6m Significant figures in Multiplication and Division: The result of multiplication and division should retain as many significant figures as are there in the original number with smallest number of significant figures. Example: 2.4m X 1.321m = 3.1704m2 Result in significant figures after rounding off = 3.2m2 1.321m÷ 2.4m = 0.5504166667m = 0.55m (in significant figures after rounding off) The videos will contain the content as per the CBSE board. The content will also help to those students who are going to appear in NEET or JEE Exams.