Complete the table.

Solution 39E All digits of a measurement including uncertain number are called significant figures. Significant figures = all certain digits + one uncertain digit The rules for determining the significant figures are (i) Zeros between nonzero digits are always significant (ii) Zeros at the beginning of a number are never significant. (iiI) Zeros at the end of a number are significant if the number has a decimal point only. Rules for rounding off the significant figures If the result contains more number of correct significant figures, then the result should be rounded off. (i) To round off the number, we have to look carefully the leftmost digit which one, we are going to be removed. (ii) If the removing leftmost digit is less than 5,