Posted by **Hayley** on Thursday, August 31, 2006 at 3:41pm.

I just do not understand ANYTHING about multiplying/dividing/adding/subtracting significant figures!

For example, the problem is: Solve the following to the correct number of significant figures: (5.039)(0.0074)

What am I supposed to do? Just multiply the numbers? What does that have to do with significant figures? I'm soo confused. Help please?

You need to know the rules for significant figures when multiplying/dividiing (one set of rules) and adding/subtracting (another set of rules).

When multiplying/dividing, the "answer" may have no more significant figures than the least number in the figures used; for example, 5.039 x 0.0074 = 0.0372886 on my calculator. Now look at the numbers used to obtain that value. There are four significant figures in 5.039 and two s.f. in 0.0074. Therefore, the answer may have no more than two s.f. and the value should be rounded to 0.037.

## Answer this Question

## Related Questions

- Chemistry - I have a Chemistry question which should be very simple but I do not...
- Chemistry - answear in standard exponential form with correct number of ...
- Science - I'm a little confused when it comes to significant figures. Where it ...
- Significant Figures - I'm having a hard time with significant figures. Any help ...
- Math - 1.2 (1+ 23.0 x 10-6/°C*50) Could someone solve this problem for me and ...
- Significant figures in chemistry - can someone please explain significant ...
- Math - 1. Is it more appropriate to use scientific notation for approximates or ...
- multiplying and significant figs - Multipy and keep only the correct number of ...
- SCIENCE - PLEASE HELP PLESE - 1) Round 578.683 m, 47.3333 kg, and 789.5 cm to ...
- Chemistry - Hi I just need help with question (ii) and (iii), i know how to work...