# significant figures

• Oct 16th 2009, 09:44 AM
rosebud-willow
significant figures
can anyone help me put 0.002479 to 4 significant figures in scientific notation?
• Oct 16th 2009, 09:48 AM
ramiee2010
Quote:

Originally Posted by rosebud-willow
can anyone help me put 0.002479 to 4 significant figures in scientific notation?

$0.002479=2.479 \times 10^{-3}$
• Oct 16th 2009, 09:49 AM
rosebud-willow
thats what I thought! but the test said it was wrong. Maybe I typed it in wrong... I'll try it again but its my last go so hopefully its right!
• Oct 16th 2009, 09:53 AM
rosebud-willow
oh god it was 0.002479562 ... it needed to be rounded up to 2.480 x 10 to the power of -3

how do you write to the power of on the computer?

thanks
• Oct 16th 2009, 11:20 AM
e^(i*pi)
Quote:

Originally Posted by rosebud-willow
oh god it was 0.002479562 ... it needed to be rounded up to 2.480 x 10 to the power of -3

how do you write to the power of on the computer?

thanks

^ = to the power of

10^2 = 100 for example