Math Operations in App Inventor 2

问题

Does anyone know any block in App Inventor 2 that acts like parentheses which will allow the computer to do those calculations first?

回答1:

this depends on how you are nesting the blocks

the first example calculates (2+3) x 4 = 20
the second example calculates 2 + (3 x 4) = 14

来源：https://stackoverflow.com/questions/26030291/math-operations-in-app-inventor-2