Question

What is (2,000)(85,000) in scientific notation and decimal form?

Answer 1

`2000` move left 3 places `->2*10^3`
`85000` move left 4 places `->8.5*10^4`

Multiply the numbers: `2*8.5=17`
Add the 10-powers: `10^3*10^4=10^(3+4)=10^7`

Answer: `17*10^7`

Normalise to SN: move one to the left:
`=1.7*10^(7+1)=1.7*10^8`

Decimal this would be: `170,000,000`
And you could do this by multiplying 2 and 85, and adding the zeroes from both numbers.