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I am trying to figure out the how many significant figures(sf), should I keep in the final

answer for multiplication and division

1. How many hours and minutes are 20 kiloseconds?

2.

3. for hours: 20*10e3 / 3600 = 5.5555 hrs

20 has only 1 significant figure (trailing zero doesn't count), hence the answer should have 1 sf, that means I should round answer to the single digits. my final answer is 6 hr. My book give 5.6 hr as the answer.

please let me know my approach is correct

for minutes 20*10e3 / 60 = 333.333 minutes

keep only 1 sf in the result,that leads my answer to 333 minutes

my book give 330 and the final answer

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# Significant digits in calculation

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