Question

How many significant figures in:
-460,000,000
-170,600
-0.00000048
-0.00203

Answer 1

• If a decimal is [p]resent, start counting from the first non-zero digit in the [p]acific side.
• If a decimal is [a]bsent, start counting from the first non-zero digit in the [a]tlantic side.

Answer 2

To demonstrate the first one, you start counting from the first non-zero digit in the atlantic (the right) side.

6 and 4 are the two significant digits here.

Answer 3

Wow man thanks