Question

An estimate for the number of cells in the human body is 8 x 10^13. An estimate for the number of cells in a particular insect is 3 x 10^3. Determine, using scientific notation, how many times more cells are in the human body than in the insect. What is the power of 10 in the answer?

Answer 1

(8*10^13)/(3*10^3)
remember
(ab)/(cd)=(a/c)(b/d)
we can split them up
also
(x^m)/(x^n)=x^(m-n)

so

(8*10^13)/(3*10^3)=(8/3)((10^13)/(10^3))=(8/3)(10^(13-3))=(8/3)(10^10)


answer is (8/3)*10^10 times
the power of 10 is 10