Multiplication is one of four elementary mathematical operations. Result of multiplication is called product. Multiplication can be thought of as repeated addition of factors. Multiplication is commutative, meaning order of factors doesn't matter
Subtraction is one of four arithmetic operations representing removal from a collection. It follows anticommutative and non-associative rules. Subtraction of 0 is additive identity. Can represent subtraction of different quantities including fractions and decimals
Decimal numbers consist of whole numbers and fraction parts. Decimal part indicates where fractional part begins
Exercises cover basic arithmetic operations and string manipulation. Programs include summation, division, multiplication, and swapping. Exercises involve user input for operations and calculations
Division is one of four major arithmetic operations. Divisor goes outside bar, dividend inside. Write quotient above bar, multiply by divisor, subtract. Continue until no more digits to carry down. Include remainder with "r." prefix
Most calculators are solar powered or have ON/OFF buttons. Add numbers using + button between numbers. Subtract numbers using - button between numbers. Divide numbers using ÷ (physical) or / (computer). Multiply numbers using x (physical) or * (computer)