Limitations of technology in calculations

12 questions

1. Using a calculator, calculate the simplified fraction of 196 \over 190.
2. Using a calculator, work out the answer to {16 \over 15} \times {30 \over 32}.
3. Izzy's calculator gives an answer as a fraction. What is the name of the key that should be pressed last on the Casio fx-991CW in order to convert this fraction to a decimal?
4. Using a calculator, match the decimal to the equivalent fraction.
5. The format key on the Casio fx-991CW allows you to change between decimals, improper fractions and mixed numbers.
6. Using your calculator, find the answer to {21 \over 12} \times {2 \over 3}
7. Jacob uses his calculator to evaluate -3^2. What will the calculator display as the answer?
8. Working with fractions is always more accurate than using decimals.
9. The calculator displays the decimal 1.234567891. Which of the following could this decimal be?
10. Use your calculator to find the area of
11. Use your calculator to covert 0.6252 into a fraction. The numerator will be ___
12. Use your calculator to covert 0.0625 into a fraction. The denominator will be ___

License: OGL