Written methods
- Column additionIn columns, starting from the right
- Column subtractionIn columns, regrouping when needed
- Short multiplicationRight to left, carrying tens
- Long multiplicationTwo rows, second row starts with zero
- Column decimalsAlign decimal points
- Multiplication with large numbersOne row per digit, adding zeros
- Long divisionLong division, step by step
- Long division by two digitsFirst make a sequence of the divisor