Arithmetic Course/Number Operation/Multiplication

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Multiplication[edit]

Addition is the operation of adding (combining) two quantities which can be represented by

A x B

Operation[edit]

a x b = b x a
a x b x c = a x (b x c) = (a x b) x c

Rules[edit]

Any number multiply by zero is equal to zero

a + 0 = a

Any number multiply to itself is

a x a = a2

Any negative number multiply by itself is

(-a) x (-a) = a2

Any number multiply to its negative is

a x (-a) = -a2