Using a Calculator Quiz
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5 questions, one answer each
Each answer is checked as you go, with why.
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1. What is the correct decimal entry for 1 hour 15 minutes?
- A. 1.15
- B. 1.25
- C. 1.5
- D. 1.75
2. A calculation shows a money answer of 12.3 on the display. What should this be written as?
- A. $12.03
- B. $12.30
- C. $12.3
- D. $1.23
3. Why should you avoid rounding values partway through a multi-step calculation?
- A. It saves time on the calculator
- B. It has no real effect on accuracy
- C. It causes the final answer to drift from the true value, which can lose marks
- D. Calculators cannot process rounded numbers
4. A calculator time answer displays 2.4 hours. How many minutes is the decimal part?
- A. 4 minutes
- B. 14 minutes
- C. 24 minutes
- D. 40 minutes
5. You need to enter an angle of 15° 45' into a calculator using decimal degrees. What decimal value should you enter?
- A. 15.45
- B. 15.75
- C. 15.045
- D. 15.075