REQUEST: Significant Digit Calculator

[Lavaloon]

I noticed that the most of TI calculators can round answers to significant digits. How come HP Prime doesn't have that feature? This feature will make HP Prime more useful in Chemistry and Physics courses.

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EDIT
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If you don't know what it significant digit calculations look like, here's an example:

Addition/subtraction:
2.345+8.5=10.5, an answer is rounded to least number of decimal places
7.93-4.6729=3.26, same as above

Multiplication/division:
5.843x1.97=11.5, an answer is rounded to least number of significant figures
4.284/3.7=1.6, same as above