The HP-55 Enigma

[Thomas Okken]

(08-04-2021 10:42 PM)Dave Shaffer Wrote:  I wish writers/editors knew something about significant figures. NASA, say, will report that some asteroid is some 100 meters in size (so one significant figure - at best) [...]

The way I learned it, 100 has 3 significant digits. If you wanted to express that number as having only 1 significant digit, you'd write 1x10^2.