Question

An ant weights about 2*10 to the fifth power pounds. There are about 1*10 to the 15 power ants on Earth. How many pounds of ants are on Earth

Answer 1

I think you mean an ant weighs 2*10^-5 lbs.

So, the ants weigh

2*10^-5 * 1*10^15 = 2*10^10 lbs