Express the result of each calculation to the correct number of signifi cant fi gures. In some, you may have to remember the correct order of operations.

(a) (0.082 × 25.32)/27.41

(b) 55.8752 × 56.533

(c) 0.198 × 10.012937 + 0.8021 × 11.009305

(d) 2.334 × 10^-2 - 3.1 × 10^-3

(e) (25.7 - 25.2) × 0.4184

Strategy

In addition or subtraction, the final result has the same number of decimal places as the number with the fewest number of decimal places. In multiplication or division, the final result has the same number of significant figures as the number with the fewest number of significant figures.