0.00241
0.990
It's already there.
6.71 is 6.7050 is rounded to three significant figures.
0.07537 rounds to 0.0754
When multiplying, the number of significant numbers in the answer should be the same as the fewest significant figures in the problem. Both 13.5 and 3.00 have three significant figures, so the answer will have three significant figures. 13.5 x 3.00 = 40.5 exactly (no need to round).
0.0034088 in three significant figures would be 0.00341
201
31,500
It is: 1040
0.990
21.3
130
The number 10.989 rounded to 3 significant figures is 11.0
It's already there.
6.71 is 6.7050 is rounded to three significant figures.
79,900
3.42*10^-5