The term 'USE A CALCULATOR' can be broken down into three crossword solutions: COMPUTE (7 letters), ADD (3 letters), and TABULATE (8 letters). Calculators are electronic devices used to perform mathematical calculations. They are often used in classrooms and workplaces to quickly and accurately solve equations. The solution COMPUTE refers to the process of using a calculator to solve a problem or equation. The solution ADD refers to the process of adding two or more numbers together using a calculator. Finally, the solution TABULATE refers to the process of organizing data into a table or chart using a calculator.