Rapid Arithmetic helps you develop skills to perform oral, mental, and written maths/numeric calculations rapidly, at magically fast speed. Practice makes perfect, so we have a large collection of practice tests, covering a wide range of topics such as additon, subtraction, multiplication. We shall be sharing many tricks for performing these calcualtions over time as well. And you can use these tests to practice techniques you learn in other books/textbooks.
We wish you Rapid progress! and we look forward to your feedback and suggestions. You can reach us at support@rapidarithmetic.com