The calculation problem of the positive and negative numbers of the unit that is first learned in the first grade of junior high school.
It is a field that you want to acquire firmly because it is the basic of the basics. Anyway, by managing the numbers, you will be able to calculate accurately and with few mistakes.
It is an application to improve the ability of calculation problems by overwhelming the overwhelming number of questions of 1000 questions or more.
The answer is not a selection formula, but you can also enter a fraction by inputting from the software keyboard.
It is not as easy as the selection type, so it is suitable for improving your ability.
It can be used as a basis for reviewing and studying for high school exams after 2 or 3 years from the usual study of 1st grade.
From the very basic level 1 to the more difficult level 4, the problems of addition, subtraction, multiplication, division, and exponentiation and their combinations, four arithmetic operations, decimal numbers, and fractional problems are all calculated. It is a content that you can practice.