The four fundamental operations in math are addition, subtraction, multiplication and division. There are corresponding symbols for each operation: the plus sign (+) for addition; the minus sign (-) for subtraction; the symbols “x”, “*” and “•” for multiplication; and the obelus (÷) and forward slash (/) for division.
Know MoreAddition is the process of combining two or more numbers to get their sum or total. Subtraction is finding the difference between two quantities. Multiplication is repeated addition. One of the numbers in a multiplication sentence indicates how many times the other number needs to be added to itself. Division is the inverse of multiplication.
Learn MoreIn math, the mean is the average of a set of numbers. To determine the mean, add all numbers in a set and take this answer and divide it by how many numbers are in the set.
Full Answer >As addition was first used extensively by the Chinese almost 6,000 years ago, it is safe to say the Chinese invented addition. However, addition is such a fundamental operation in mathematics that it cannot be completely attributed to one individual or a group of individuals.
Full Answer >Mathematics is a literally infinite field, and so many quirky or otherwise unusual facts about the subject have come to light over the centuries that humans have been studying it. Some of the best of these involve deeply counterintuitive areas such as statistics, multidimensional modeling and game theory.
Full Answer >Regrouping is the borrowing of a value from one column of numbers to another to aid a mathematical operation. If one is subtracting, it’s necessary to regroup when the number at the top of a column is smaller than the one below it.
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