CASIO MJ-120D Desktop Basic Calculator (12 Digit)

For doing math in school or for work, a calculator is an important tool in almost every field of work. This calculator from Casio comes with numbers up to 12 digits and also features other functions such as the Percent Key, Tax Calculation Keys, Square Root Key, and Memory function. Also, since it works on both battery and solar power, this calculator lasts for a long time.