Question

How many times smaller is 2 × 10^-10 than 4 × 10^-5

Answer 1

200,000

Explanation:

To find how many times smaller is smaller number than greater number, divide greater number by smaller number.

Greater number
`=4* 10^(-5)`

Smaller number
`=2* 10^(-10)`

Then

`\frac{\text{Greater number}}{\text{Smaller number}}\\ \\=(4* 10^(-5))/(2* 10^(-10))\\ \\=(4)/(2)* (10^(-5))/(10^(-10))\\ \\=2* (1)/(10^(-5))\\ \\=2* 10^5\\ \\=2* 100,000\\ \\=200,000`