Melody

ok I'll do it to 3 significant figures

0.013562

ignore all zeros on the left

so the first significant figure is 1

the second is 3

the third might be 5 but since this is the last one that we want look at the next place to see if it should be rounded up.  The next digit is 6 (it is big which means it is 5 or more) so the third significant figure is rounded up from 5 to 6

so the answer is  0.0136

Take a look at this clip.

It is on the seive on eratosthenes.  It'll show you how you can find all the prime numbers up to 100.

You can use it to find higher ones as well if you want to :)

$$\sqrt[4]{625}=625^{1/4}$$

so you can enter    625^(1/4)

$${{\mathtt{625}}}^{\left({\frac{{\mathtt{1}}}{{\mathtt{4}}}}\right)} = {\mathtt{5}}$$

Hi Geno, 

I happen to know that Geno just loves rhinoceroses.  

So I think we should give Geno lots of rhinos to show how much he is appreciated around here.    

This one would look great in your yard Geno.  It is cute and creepy too. 

$${{\mathtt{10}}}^{{\mathtt{1.969}}} = {\mathtt{93.110\: \!787\: \!546\: \!783\: \!033\: \!5}}$$

look here

It is already in scientific notation. 

Lpook at this post.

40.5=4.05*10