How Do You Multiply Large Numbers in Scientific Notation?

[davie08]

Homework Statement

2.573x10^13 x 6.58x10^-5 x 7.0732x10^11

The Attempt at a Solution

would you round up the answer to 120 initially after multiplying?

heres my answer 120x10^19=1.20x10^17

 

[SammyS]

Homework Statement

2.573x10^13 x 6.58x10^-5 x 7.0732x10^11

The Attempt at a Solution

would you round up the answer to 120 initially after multiplying?

here's my answer 120x10^19=1.20x10^17

I would round-off AFTER I get the final result for the power of ten.

BTW, your final answer is incorrect.

120x10¹⁹ = (1.20x10²)x10¹⁹ = ___ ?

 

[davie08]

haha what was I thinking jeez being out of school for a year and a half is killing me I can't wait to begin commerce in august.

 

[gneill]

haha what was I thinking jeez being out of school for a year and a half is killing me I can't wait to begin commerce in august.

Ah, because in commerce two orders of magnitude doesn't matter?