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 correct number of significant digits.

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Add, and give your answer to the correct number of significant digits.

12 cm+0.031 cm+7.969 cm =

 

20.00cm was wrong, is it 20.000cm as that is the most decimal places shown? yet 4 sig figs is the most shown in the question. or is 20cm correct as the decimals become insiginificant?

 

143 cm +289.25 cm +  68.45cm + 6.00cm = 506.70cm was also wrong

 Mar 23, 2019
edited by Guest  Mar 23, 2019

5+0 Answers

 #1
avatar+31 
0

nonzero digits are significant, so it would be 20cm and 506.7cm

 Mar 23, 2019
 #2
avatar
0

thanks,

 

24789.4 km / 43.5 km = 569.871 km  marked incorrect, is the answer they are looking for 5.69.8 km to match the sig figs in the question?

Guest Mar 23, 2019
 #3
avatar+31 
0

i would assume so

imheretosavetheday  Mar 23, 2019
 #4
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0

thanks again

Guest Mar 23, 2019
 #5
avatar+532 
0

I think it's for nonzero digits. :)

 Mar 23, 2019

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