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Remove non significant zeros in a decimal number with rounding

I am new to coding. I have created a simple calculator to divide two numbers and display the result with 5 decimal digits rounding. When I divide 1 by 1000 (as an example), it is showing the answer as 0.00100. My question is how to remove the two zeros on the right-hand side of the answer so that I can get the value as 0.001. I need to do lot of this type of calculations in an app that can do conversions between different units. Is there a simple solution available? Your help will be highly app…

Significant figures/ significant digits

Hello everyone! Does MIT App Inventor have a function to do numbers to two significant figures? I can round to the nearest whole number and I can do to two decimal places, but ideally I'd like my output in two significant figures. Thanks in advance!