Evaluate 25.2×137433.3. All the digits in this expression are significant.
1040
We have 25.2×137433.3= 1039.7838....
Out of the three numbers given in the expression 25.2 and 33.3 have 3 significant digits and 1374 has four. The answer should have three significant digits. Rounding 1039.7838... to three significant digits, It becomes 1040. Thus, we write
25.2×137433.3 = 1040.