Question

Express the following numbers in exponential notation so that the number has 3 significant figures : a) 50781 b) 0.000002 c) 0.0004621 d) 8000

Answer 1

Answer:

a) 5*10^⁴+0*10^³+7*10²+8*10¹+1*10^0

b) 2*10^-6

c) 4.621*10^-4

d) 8.0*10^3

Answer 2

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a) 50781 = 507.81 × 10²

b) 0.000002 = 200 × 10-⁸

c) 0.0004621 = 462.1 × 10-⁸

d) 8000 = 800.0 × 10²