Sure, you could use the calculator, or any one of a dozen-odd apps that allow you to tap the screen and calculate the tip in a restaurant, but why even bother? iOS and Siri can meet your needs just by talking to your iPhone–or iPad, but won’t that get meatloaf gravy all over it?
Regardless, here’s how to ask Siri the right way to calculate the tip for the super-helpful server or bartender in your life.
You can ask Siri to do the math, first of all. Simply say something like, “What’s 20 percent of fifty-six dollars and ninety three cents” and it will tell you. Siri will also tell you the minimal currency you need to use to pay that $11.39 tip, as well as the total coin weight of the tip. If you don’t say “dollars” and “cents,” Siri won’t put in a decimal place, or use the currency answer, so be sure to use those specific terms.
You can also be more math-centric, as well, saying, “15 percent of thirteen point ninety four.” Siri will return the math to you, with a result, a rational approximation, and a number line, for good measure.
Via: OS X Daily