Leonardo Pisano (Fibonacci)

And if anyone wishes to learn the art of calculation, let him read this book, and he will find in it all that he needs.

I have also included some problems concerning the division of inheritances, because they are often encountered in practice.

The art of calculation is most useful for all men, whether they be merchants, or lawyers, or physicians, or any other profession.

I have taken care to explain everything clearly, so that even those who are not learned may understand it.

And if there be any error in this book, I pray that it may be corrected by those who are more learned than I.

I have also included some problems concerning the calculation of interest, because they are very important for merchants.

The method of the Indians is superior to all others, because it is more concise and more convenient.

I have also included some problems concerning the extraction of roots, because they are necessary for many calculations.

And I have striven to make this book useful for all who wish to learn the art of calculation, whether they be young or old.

I have also included some problems concerning the calculation of proportions, because they are very useful in many situations.

The art of calculation is a most noble art, and it is worthy of being studied by all men.

I have also included some problems concerning the calculation of areas and volumes, because they are useful for those who wish to learn the art of measurement.

And I have striven to make this book as complete as possible, so that nothing may be lacking for those who wish to learn the art of calculation.

I have also included some problems concerning the calculation of averages, because they are useful in many practical applications.

The art of calculation is a most ancient art, and it has been practiced by many wise men throughout history.

I have also included some problems concerning the calculation of permutations and combinations, because they are useful in many situations.

And I have striven to make this book as clear and concise as possible, so that it may be easily understood by all.

I have also included some problems concerning the calculation of series, because they are useful in many mathematical applications.

The art of calculation is a most beautiful art, and it is worthy of being admired by all men.

I have also included some problems concerning the calculation of probabilities, because they are useful in many practical applications.