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Multiplying and Dividing Signed Numbers. 10.4. Multiplying. Multiplying Numbers. The product of two numbers having different signs is a negative number. The product of two numbers having the same sign is a positive number. Product of Like Signs (+)(+) = + ( ‒)(‒) = +.

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## 10.4

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**Multiplying**Multiplying Numbers The product of two numbers having different signs is a negative number. The product of two numbers having the same sign is a positive number. Product of Like Signs (+)(+) = + (‒)(‒) = + Product of Different Signs (+)(‒) = ‒ (‒)(+) = ‒**Example**Multiply. a. b.**Practice 1-5 on p 672**Multiply.**Example**Evaluate. a. b.**Practice 6-10 on p 672**Multiply.**Dividing**Dividing Numbers The quotient of two numbers having different signs is a negative number. The quotient of two numbers having the same sign is a positive number. Quotient of Like Signs Quotient of Different Signs**Example**Divide. a. b.**Practice 11-14 on p 673**Divide.**Example**Divide if possible. a. b. Is undefined because there is no number that gives a product of −6 when multiplied by 0.**Example**A professional golfer finished 4 strokes under par (−4) for each of three days of a tournament. What was her total score for the tournament? The golfer’s total score was −12 or 12 strokes under par.**Practice 17**A card player had a score of -13 for each of four games. Find the total score?**Example**Multiply. a. b. c. 1 2**Practice 1-5 on p 672**Multiply.**Example**Divide. a. b. c.**Practice 11-14 on p 673**Divide.

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