MathematicsExam code: 0580

Using a Calculator

Number

Flashcards

The display is not always the answer

  • A displayed figure has to be interpreted in the context the question set
A scientific calculator with a value of −2 in its display, above the function keys and the number pad with its DEL and AC keys
Source: Using a calculator by Save My Exams
  • In money, a display of 7.5 means £7.50, because currency is written to two decimal places
  • In time, a display of 1.75 means 1 hour 45 minutes, because 0.75 of an hour is 45 minutes
  • Reading 1.75 as "1 hour 75 minutes" is the error this warns against
  • A display in standard form, shown with a small exponent, must be written out properly rather than copied with the calculator's own notation

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