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Multiplication and division of integers:
Multiplication:
In general
i.) ( a negative number ) x ( appositive number ) = ( a negative number)
ii.) (a positive number ) x ( a negative number ) = ( a negative number)
iii.) ( a negative number ) x ( a negative number ) = ( a positive number)
Examples -6 x 5 = 7 x -4 = -3 x -3 = -2 x -9 =
Division:
Division is the inverse of multiplication.
In general
i.) (a positive number ) ÷ ( a positive number ) = ( a positive number)
ii.) (a positive number ) ÷ ( a negative number ) = ( a negative number)
iii.) ( a negative number ) ÷ ( a negative number ) = ( a positive number) iv.) ( a negative number ) ÷ ( appositive number ) = ( a negative number) Examples -18 ÷ 3 = -81 ÷ (-9) =
Note;
For multiplication and division of integer: Two like signs gives positive sign. Two unlike signs gives negative sign Multiplication by zero is always zero and division by zero is always zero.