Open a calculator page. Enter the following and press enter.
- $2+7$
- $2-7$
- $2\cdot7$
- $2÷7$
- $\frac{2}{7}$ (press ctrl then ÷ to enter fractions)
Display Digits
To change the number of digits displayed for answers,
- doc ▾ > "7 Settings & Status" > "2 Document Settings..."
Change "Display Digits" to "Float 6"
This will give answers to 6 significant figures. Use "Float 6" for the rest of this page.
Fractions and Decimals
The calculator gives exact answers (as fractions). To return a decimal approximation,
Enter the value shown on your calculator:
To approximate a decimal to a fraction,
- press menu > "2 Number" > "2 Approximate to Fraction"
Convert $0.4375$ to a fraction and enter it here:
Brackets, Negatives, Exponents and Roots
Calculate the following:
- $-3-3$ (The first $-$ is negative (-). The second $-$ is subtract -)
- $-3-(-3)$
- $-3(-3)$
- $-3^2$
- $(-3)^2$
- $(-3)^3$ (^ for exponents)
- $\sqrt{3}$
- $\sqrt{-3} =$ Error: Non-real calculation
- $\sqrt[3]{3}$
Calculate $\displaystyle\frac{3-3^\frac{-3}{\sqrt{3}}}{\left(\sqrt[3]{3}\right)^{-3(-3)}}=$
Copying and modifying previous calculations
Calculate $\displaystyle\frac{6+\sqrt{(-6)^2-4(3)(2)}}{2(3)}=$
To reuse this calculation,
- Press ▴ until you highlight $\displaystyle\frac{6+\sqrt{(-6)^2-4(3)(2)}}{2(3)}$, then press enter
- Change the $+$ into a $-$ by pressing ◂, deleting $+$ and replacing it with $-$
Follow these steps to calculate $\displaystyle\frac{6-\sqrt{(-6)^2-4(3)(2)}}{2(3)}=$
To clear the history,
- press menu > "1 Actions" > "5 Clear History"