Which is the more precise measurement, 5.5 L or 2 L?

Question

I need to choose which is the most precise unit of measurement for the following pairs.  I am just trying to understand it better...studying.  And if I can figure out the answers I feel I can understand better why one is more precise than the other.

 

Which is the more precise measurement in each of the following pairs:

 

5.5 L or 2 L

 

25 g or 3.5 kg

 

11 3/16 inches or 5 inches

 

 

Just trying to get a handle on for instance....is 5.5 L more precise than 2 L because it has a decimal in it even though 5.5 is a bigger number than 2?

 

Is 25g automatically more precise than 3.5 kg because Grams is a smaller unit of measurement than kg?

 

Is 11 3/16 inches more precise than 5 inches because it has the fraction 3/16 in it even though 11 3/16 is a larger number than 5?

 

Thank you for any help you can give me.

Answer 1

S, the issue of precision has everything to do with what you use to measure with. Pretty much every measurement you can by comes with how precise it is and every reading you get out of it is considered precise as long as it stays within the limit set by the manufacturer. If you use your 30cm ruler for example 19.2547 cm isn't a value you get whereas 19 cm is. I hope this helps you.