Express each number and answer in exponential form and appropriate number of significant figures.?

Question

a) 320 x 24.9/0.080 =

b) 432.7 x 6.5 x 0.002300/62 x 0.103 =

c) 32.44 + 4.9 - 0.304/82.94 =

d) 8.002 + 0.3040/13.4 - 0.066 + 1.02 =

Answer 1

(320 x 24.9) / 0.080 = 99600

= 9.96*10^4

((432.7 x 6.5 x 0.002300) / 62) x 0.103 = 0.0107466628

= 1.07 *10^-2

32.44 + 4.9 - (0.304 / 82.94) = 37.3363347

3.73*10^1

8.00200 + (0.3040 / 13.4) - 0.066 + 1.02 = 8.97868657

=8.98*10^0

significant figures depend on the accuracy someone

wants.