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  2. Subtraction - Wikipedia

    en.wikipedia.org/wiki/Subtraction

    Placard outside a shop in Bordeaux advertising subtraction of 20% from the price of the second perfume purchased. Subtraction (which is signified by the minus sign −) is one of the four arithmetic operations along with addition, multiplication and division. Subtraction is an operation that represents removal of objects from a collection. [1]

  3. Standard algorithms - Wikipedia

    en.wikipedia.org/wiki/Standard_algorithms

    Then, it must be evaluated whether regrouping or ungrouping is necessary. Then, either treat each place value column separately and ungroup and subtract before moving on, or check all potential ungroupings first and then perform all the subtractions. (Achieve The Core, nd) Standard subtraction algorithm. Regrouping and ungrouping.

  4. Carry (arithmetic) - Wikipedia

    en.wikipedia.org/wiki/Carry_(arithmetic)

    The same carry bit is also generally used to indicate borrows in subtraction, though the bit's meaning is inverted due to the effects of two's complement arithmetic. Normally, a carry bit value of "1" signifies that an addition overflowed the ALU , and must be accounted for when adding data words of lengths greater than that of the CPU.

  5. Elementary arithmetic - Wikipedia

    en.wikipedia.org/wiki/Elementary_arithmetic

    A subtraction problem such as is solved by borrowing a 10 from the tens place to add to the ones place in order to facilitate the subtraction. Subtracting 9 from 6 involves borrowing a 10 from the tens place, making the problem into 70 + 16 − 39 {\displaystyle 70+16-39} .

  6. Associative property - Wikipedia

    en.wikipedia.org/wiki/Associative_property

    However, many important and interesting operations are non-associative; some examples include subtraction, exponentiation, and the vector cross product. In contrast to the theoretical properties of real numbers, the addition of floating point numbers in computer science is not associative, and the choice of how to associate an expression can ...

  7. Arithmetic - Wikipedia

    en.wikipedia.org/wiki/Arithmetic

    The main arithmetic operations are addition, subtraction, multiplication, and division. Arithmetic is an elementary branch of mathematics that studies numerical operations like addition, subtraction, multiplication, and division. In a wider sense, it also includes exponentiation, extraction of roots, and taking logarithms.

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