# How to Solve Math Problems with Siri

Siri and Wolfram|Alpha aren’t one-trick ponies. This powerful duo on your iPhone 4S can answer math-related questions. For example, you’re at your bank machine and you need to deposit a few checks. You have three main options: add the numbers up in your head or on paper, pull out a calculator (perhaps on your smartphone), or for the fastest solution, just ask Siri for the answer.

Here’s what a typical exchange might look like:

1. Press and hold the Home button.

In this example, tell Siri the amounts of each check and ask for a total. Siri crunches the numbers for you and displays the answer on the screen.

3. Double-check the amounts you gave — you’ll see it on the screen, too — to ensure Siri heard you correctly,

4. If you’re all good, press the Home button to close Wolfram|Alpha.

There are different ways to say numbers, including decimal points, if you need Siri to add it all up. For \$220, for example, you can say “two-twenty” or “two-hundred and twenty.” For \$220.20, you can say “two-twenty point twenty,” “two-twenty dot twenty,” or “two-twenty dot two zero,” and so on. Remember, Siri is amazingly versatile.

Siri isn’t just limited to addition; you can also ask questions that involve subtraction, multiplication, and division or a combination of them all. You can say “plus” or “add,” “minus” or “take away,” “multiply” or “times,” and so on. Siri usually doesn’t have a problem figuring out what you want.

Or how about percentages and square roots? Fractions? No problem.

One of the ways to really wow your friends is to whip out your iPhone when the waiter brings your check and ask Siri to figure your tip:

1. Press and hold the Home button.