Hp 20B Manual do Utilizador descarregar pdf (Página 29)

Mathematical Calculations

To find a percentage of a given number, enter the number and multiply it by the desired percentage, followed by =. For

example, to find 25% of 200, press 200*25%= to return a result of

To add or subtract a percentage of a number, enter the first number, followed by + or - and the percentage followed

by %. Finish your calculation with =. For example, to add 10% to 50, press 50+10%= to

return a result of

In RPN mode, the % key calculates

% of the number on Level 2 of the stack, when

is the number on Level 1 of the

stack. It does not modify the number on Level 2 of the stack, and thus allows you to perform addition or subtraction after

pressing % to add or subtract

% from the number.

For example, 200I25% returns

, but

200

is still on Level 2 of the stack, and pressing -

returns

150

, or 200-25%.

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Hp 20B Manual do Utilizador Página 29