[+fullrep] Science Help [light years/light seconds/scientific notation]

[Maki]

By moving the decimal point

Example:
2.999746322 x10^5
29.99746322 x10^4
299.9746322 x10^3
2999.746322 x10^2

Are all the same as
299,974.6322

Waittt though idgi
I got 299,974.6322
If I move the decimal 5 times to the left I get
29.99746322x10^5

[Mod]

What Bettser said.

Most high school problem sets advise you to answer to 2 decimal places (x.xx).
But to be more precise, look at the highest sig dig (aka sig figs) given in any # of the original problem. For instance, if a question throws out numbers like 2.34, 1.222, and 8.787777 in it, answer to 2 decimal places (2.34).

...and never use exponent "10^1" in scientific notation, because that's just "10". You'll likely get docked marks if you do, minimum in scientific notation is always "10^2", onwards.

---------- Post added at 05:28 PM ---------- Previous post was at 05:26 PM ----------

Waittt though idgi
I got 299,974.6322
If I move the decimal 5 times to the left I get
29.99746322x10^5

Are you following BEDMAS? Exponents first.

10^5 = 100,000

2.99 * 100,000 = 299,000

aka 2.99 * 10^5

---

Never multiply your value by '10', then exponent it...remember BEDMAS.

[Bettser]

Waittt though idgi
I got 299,974.6322
If I move the decimal 5 times to the left I get
29.99746322x10^5

2.999746322 x10^5
29.99746322 x10^4
299.9746322 x10^3
2999.746322 x10^2
29997.46322 x10
299974.46322