Significant Figures and Exponential Notation How many significant figures are in

Question

Significant Figures and Exponential Notation How many significant figures are in each of the following numbers? (a) 7.4 _____ (b) _____ 462 (c) 1.40 _____ (d) 16,000 _____ (e) 0.072 _____ (f) 0.0130 _____ (g) 0.0058 _____ (h) 0.1090 _____ Write each of the following numbers in proper exponential notation: (a) 557 (b) 0.064 (c) 4, 300 (d) 382.0 (e) 11, 800,000 (f) 0.007 How many significant figures should be in the answer to each of the following calculations? (a) 17.1 +0.77 (b) 47.826 -9.4 (c) 12.4 times 5.3 = (d) 1.27 times 3.1416 = (e) 0.5172/0.2742 (f) 0.0172/4.36 = (g) 5.82 times 760 times 425/723 times 273 = (h) 0.92 times 454 times 5.620/22.4 =

Explanation / Answer

1.

a) 7.4 (2 significant figures)

b) 462 (3 significant figures)

c) 1.40 (3 significant figures)

d) 16,000 (2 significant figures)

e) 0.072 (2 significant figures)

f) 0.0130 (3 significant figures)

g) 0.0058 (2 significant figures)

h) 0.1090 (4 significant figures)

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2.

a) 557 = 5.57*10^2

b) 0.064 = 6.4*10^-2

c) 4300 = 4.3*10^3

d) 382.0 = 3.82*10^2

e) 11,800,000 = 1.18*10^7

f) 0.007 = 7.0*10^-3

As per chegg guidelines 1st question is answered.

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