This video features a review of the key features of the HP10s+ calculator.
It includes looking at the different modes available from the Mode menu, inputting and changing between decimal and fraction answers, percentages, indices or exponents and a brief look at the DEL and π key. The HP10s+ has three modes to complete calculations with. COMP or computational mode for general calculations. and then two statistical modes, one for standard deviation and one for regression.

As with many other models of calculator, you can switch the angle units between degrees, radians and the lesser used gradians. You can alter how numbers are displayed, including switching between decimal and scientific notation and display mode lets you change between displayingan improper fraction or a mixed number in the first instance.

One of the best features of the HP10s+ is that if you are working with decimal numbers then you will get a decimal answer in the first instance.

The fraction button enables you to switch this to a fraction answer if required. The reverse is also true. Input fractions or mixed numbers and you get a fraction (or mixed number) answer in the first instance.

The percentage button is a little trickier. It is best to input a percentage sign at the end of your percentage calculation to get the correct answer. This may be due to the % function being coupled with the equals button.

Additionally, it is possible to input a mixed number. This is possible by pressing SHIFT and then the fracttion button. Again the icon above the fraction button demonstrates this. You have to input the integer component first and then navigate to input the numerator then denominator of the fraction. You are then able to use this mixed number in your calculations.