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3 Cards in this Set

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  • Back
Subtracting real numbers
the difference a-b is the number c, a=b+c

a-b=a+(-b)

for any real number "a" and "b" (to subtract add the opposite, or additive inverse of the number being subtracted)
multiplying of real numbers
multiply a positive and a negative the answer is negative


Multiply two negatives and the answer is positive

smae sign = positive
different signs = negative
Dividing of real numbers
the quotient a divided b or a/b where b is not equal to 0 is that unique real number c for which a=a x b

to multiply or divide two real numbers (where the divisor in nonzero)

A) multiply or divide by the absolute values\

B) If the signs are the same, the answer is positive

C) if the signs are different, the answer is negative