Standard Calculator (History & Memory)

Q: How does the tape history work?

Each time you calculate, the expression and result are added to the tape on the right. Click any line to reuse it instantly. Up to 20 entries are kept.

Q: How is the percent key handled?

For addition and subtraction it uses the previous value as the base. For multiplication and division it treats the entry as divided by 100.

Perform four-function math with parentheses, percent, memory slots, and a running tape. Every control works by mouse, touch, or keyboard.

Type an expression to begin

0

Memory empty

FAQ

How does the tape history work?

Every calculation adds the expression and result to the tape. Click a line to bring the answer back into the display. The last 20 entries stay available.

How is the percent key handled?

For addition and subtraction the percent refers to the previous term. For multiplication or division it simply divides the current number by 100.

FAQ

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