# Math Help - significant figures

1. ## significant figures

can anyone help me put 0.002479 to 4 significant figures in scientific notation?

2. Originally Posted by rosebud-willow
can anyone help me put 0.002479 to 4 significant figures in scientific notation?
$0.002479=2.479 \times 10^{-3}$

3. 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!

4. 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

5. 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