HP 10s User Manual page 17

(Note that only the display precision gets fixed to
3 digits. The calculations are still performed with
the complete number.)
100 Ei 3 33.333
DB 500.000
(Note that you can also force the calculator to
round a number to the number of decimal places
you have specified.)
100 a3 El 33.333
(Internally Rounded) 33.333
| x Ben = | 499.995
@ Press [Nove --- +++ [3] (Norm) (1) to cancel the settings.
@ Example 2: 2+3
Display the result with two significant digits(Sci 2)
You can also display result in 10 significant digits
Sci 10) using (Sci) (0)
@ Press [Ho] ----- [3] (Norm) (1) to cancel settings.
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