a * 0=0
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The property of reciprocals as multiplicative inverses.
It illustrates the place-value property of numbers. 6 times 4 = 2*10^1 + 4*10^0 or 2 lots of tens plus 4 units.
The property that 1 is the multiplicative identity for numbers.
The identity element for multiplication of numbers is 1 and it has the property that for any number, X, in the number system, X * 1 = X = 1 * X The multiplicative property of -1 is X * (-1) = -X = (-1) * X for sets where -1 and -X are defined: they need not be, eg in the set of positive numbers.
Please don't write "the following" if you don't provide a list. This is the situation for some common number sets:* Whole numbers / integers do NOT have this property. * Rational numbers DO have this property. * Real numbers DO have this property. * Complex numbers DO have this property. * The set of non-negative rational numbers, as well as the set of non-negative real numbers, DO have this property.