Is there a built-in calculator?

No, there isn't.

There wasn't with either of my two iPad2's, but are loads of calculators in the App store you could download. 7th Gear Calculator is free and is designed to work on iPad or iPhone......

In addition to the previous reply, there are a number of calculator apps available in the App Store

As the developer I am biased but I would suggest looking at Perpenso Calc. It is five calculators in one: scientific, statistics, business, hex and bill/tip. With its support for RPN, fractions, complex numbers and many other features it is comparable to traditional handheld calculators. Worksheets offer a more natural way to enter, edit and view data and to perform some common calculations. iPad specific functionality includes customizable display lines.

A related iPhone-only app, Perpenso Calc 4, is a lite app and is upgradable to full via In-App Purchase.

http://www.perpenso.com/calc/calc3.html

To be more formal ... as the developer I may receive some form of compensation, financial or otherwise, from my recommendation or link.

Hi,

I want to introduce a calculator written by me.

Calculator for Fun

Calculator for Fun Lite

It would be a great calculator if you have children.

Both of them have:

√ Great math practices for your children

√ Tips Calculator (coming soon in iPhone version.)

√ Calculator

√ Scientific Calculator

√ Statistic Calculator

But the most important thing is the user interface,

I written this calculator for my daughter for her math homework, (first grade student)

Because it's design for my child, I paid a lot of time to simplify the interface.

You can find the interface is very user friendly to use and do not need to keep too much thing in your mind.

If you are looking for a friendly and smart Calculator, please make a try of this one, thank you~~

I may receive some form of compensation, financial or otherwise, from my recommendation or link. <Edited by Host>