Work out the value of 7 x 10(5) x 3000 and give your answer into standard form (the 5 is like a power)

The number of atoms in one kilogram of helium is 1.51 x 10(26) calculate the number of atoms in 30 kilogram of helium.

Give your answer in standard form...

I have 3fg and my thanks to give lol..

go to www.google.com
and type in 7*(10^5)*3000 =
with the equal sign , * means multipy, () to make sure it doesn't raise the power to 5*3000

So the answer is 2.1 x 10^8?

no, it's to the 9th

as saber said:

= 7 * 10^5 * 3 * 10^3

= 7 * 3 * 10^8

= 21 * 10*8

= 2.1 * 10^1 * 10*8

= 2.1 * 10^9