SigFig and Conversions

# SigFig and Conversions - Sample Questions for Significant...

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Sample Questions for Significant Figures and Unit Conversions Use the correct number of significant figures for each problem. 01. Convert to standard scientific notation (watch for significant figures !) a) 22,414 b) 0.00017 g c) 610.0 m d) 0.00890 L 02. Convert from exponential notation to regular numbers. a) 4.3 x 10 -4 b) 3.02 x 10 6 c) 3.471 x 10 -2 d) 9.3947 x 10 3 03. Indicate the number of significant figures in each measurement. a) 8.1441 mg b) 0.00050 m 2 c) 6,480,100 s d) 15.20 ° C e) 10.0800 x 10 2 g 04. Round to three significant figures and express the result in scientific notation. a) 100.000 b) 0.005000 c) 73,000 d) 1.5615 x 10 5 e) 8854.05 f) 12,350 05. Write 670 000 to show a) two b) four c) six significant figures. 06. How many significant figures are there in the answers to each of the following calculations? a) (23.9684 g) - (23.9680 g) b) (2.7 cm) + (6.84 cm) + (69.4 cm) c) (54.3286 g) / (25.4 mL) d) (2.7 cm) (26.8 cm) (79.4 cm) 07. Do the indicated arithmetic and give the answer to the correct number of significant figures. a) (8.71 x 0.031) / 0.056 b) 0.71 + 81.8 c) (6.40 x 10.0) / 746.3 d) 104.37 + 2.1835 - 98.431 e) (934 x 0.00435) + 107 f)
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