http://www.chemteam.info/SigFigs/SigFigs.html
I shall be happy to check your answers.
for each of the following, give an answer with the correct number of significant figures:
A. 400 times 185
b. 2.40 divided by 4 times 125
c. 0.825 times 3.6 times 5.1
d. 3.5 times 0.261 divided by 8.24 times 20.0
2 answers
7.40 *10^4