Need this quick to correct my chem quiz, will give brainliest!
ROUND the answer for each problem to the CORRECT number of significant figures.
A: (7.31 × 10^4) + (3.23 × 10^3)
B: (8.54 × 10^-3) - (3.41 × 10^-4)
C: 4.35 dm × 2.34 dm × 7.35 dm
D: 4.78 cm + 3.218 cm + 5.82 cm
E: 38,736 km ÷ 4,784 km