PEMDAS order of operations
The calculator strictly follows the standard mathematical order of operations: Parentheses, Exponents, Multiplication and Division (left-to-right), then Addition and Subtraction (left-to-right). Entering 1 + 2 × 4 yields 9, not 12. Use parentheses to override the default order.
Memory functions (MC · MR · M+)
M+ adds the current displayed number to a hidden memory variable. MR recalls that memory value to the screen. MC resets the memory variable back to zero. The "M" indicator appears on the display when memory holds a non-zero value.
Display limits & error handling
The screen is limited to 8 digits. Any computation that produces a result greater than 99,999,999, a division by zero, or the square root of a negative number will display ERROR. Press AC to clear and start fresh.
Transfer Display
The Transfer Display button copies the current screen value to your device clipboard, mimicking the digital answer boxes of standardized testing environments.
/ TESTING TIP
Per official testing guidelines, do not rely on the calculator for simple mental math. Reaching for the device costs roughly 12 seconds per question — time better spent on problems that genuinely require computation.