Question

round off to three significant figures
a) 32.97
b) 6.098
c) 0.0004125

Answer 1

a) 3.297 x 10 raised to the power 1 but since 9 and 7 are greater 5 by rounding up rule the answer is 3.30 x 10 raised to the power 1 with significant nos 3

b) (SAME RULE) so hence, 6.10 x 10 (NO POWER) and sig. nos 3

c) (SAME RULE) 4.13 x 10 raised to the power minus 4 and sig. nos 3