Keyboard shortcuts

KeyDescription
+, -, *, /+, −, ×, ÷
EnterCalculate the result
EscClear everything (AC)

Percent calculation

For this example, remember that 20% = 20 ÷ 100 = 0.2.

ExampleWhat's 20% of $10?
You type10 × 20%
The app calculates10 × 0.2
= 2
ExampleApply a 20% discount to $10.
You type10 − 20%
The app calculates10 × (1 − 0.2)
= 10 × 0.8
= 8
ExampleAdd 20% tax to $10.
You type10 + 20%
The app calculates10 × (1 + 0.2)
= 10 × 1.2
= 12
ExampleIf the price is $12 including 20% tax, what's the price without tax?
You type12 ÷ (100% + 20%)
The app calculates10 ÷ (1 + 0.2)
= 12 ÷ 1.2
= 10