Question

How do you write `(4 times 10 ^ 8) + ( 2 times 10 ^7)` in standard from?

Answer 1

`=420,000,000`

Explanation:

`4xx10^8=400,000,000`
`2xx10^7=20,000,000`

`400,000,000+20,000,000=420,000,000`