Definition Of Significant Figure And Rounding Off Examples.
Q.1. What is SIGNIFICANT FIGURE ? SIGNIFICANT FIGURE the significant figure in a numerical expression is defined as these digit whose value are known along with additional digit whole value is uncertain. Eg : 24.82 cm having 3 certain digits are 2, 4, 8 and one doubtful digit is 2. Therefore, this reading has 4 significant figure. * Rules for determining the number of significant figure : 1. Except zero(0) all the digit 1 to 9 are significant. Example : 4.25 number has 3 significant figure. 71. 435 number has 5 significant figure. 2. All digits include zero are significant if zero appears in between non-zero digit. Example : 40.05 has 4 significant figure. 3. Zero to the left of the first non- zero digit in a number is not significant. It indicates only decimal point. Example : 0.4 28 has 3 significant figure. 0.054 has 2 significant figure. 4. ...