Posted by **Katrina** on Sunday, September 17, 2006 at 7:03pm.

when we do convertions, do we have follow the rules for rounding?

is it 118.5cm=1.19m, or 118.5cm=1.18m?

It depends upon how many significant figures (sf) you are allowed, whether you are doing converSions or calculating some other problem. By definition, there are 100.000000000 cm in 1.00000000000 meter; therefore, 118.5 cm = 1.185 m. You have 4 sf in 118.5 and you are allowed to have 4 in the answer.

the precision of the stopwatch is 0.01second, if the question ask us to provide the answer to the nearest 0.1second,so...

12.65seconds=12.6 or 12.7seconds?

Some people do rounding differently when the last number is a 5. I follow the rule to "round to the even number." Therefore, I would round to 12.6 since 6 is the even number. If it were 12.75, I would round to 12.8 (the nearest even number). I hope this helps.

## Answer this Question

## Related Questions

CHEMISTRY: URGENT DRBob222 - I thought it was similar so I wrote... x + y = 30cm...

a - A rectangle is 3times as long as it is wide the perimeter is 60cm. Find the ...

Math to Ms.Sue (urgent ) - 11. Lorenzo has a checkbook balance of $118.00. He ...

Geometry - Find the surface area for each of the following Rt. Square Pyramid 6....

Word Problem - I have a couple of questions. Could you please check one of them ...

Philosophy - Construct natural deduction proofs for each of the following. 118.2...

Science (Chemistry!) - I just do not understand ANYTHING about multiplying/...

Physics - There a five positions (A=-10cm, B=-5cm, C=0cm, D=5cm, E=5cm). A block...

Statistics - Hi - I have some data from a biology experiment that I need to find...

Physics (Trig Bit) - A boy and a girl carry a 12.0 kg bucket of water by holding...