Here's how to use Excel as a calculator to perform basic arithmetic operations such as addition, subtraction, multiplication, and division.

To help students in the United States remember this order of operations, teachers drill the acronym PEMDAS into them: parentheses, exponents, multiplication, division, addition, subtraction.

A new proof about prime numbers illuminates the subtle relationship between addition and multiplication — and raises hopes for progress on the famous abc conjecture.

This illustrated pamphlet describes the operation of manual and electrically operated versions of the Underwood Sundstrand printing adding machine. Addition, subtraction, and multiplication by ...