1.8 Dividing Rational Numbers

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Presentation transcript:

1.8 Dividing Rational Numbers I can use the rules for dividing integers to divide rational numbers and solve problems by dividing rational numbers.

Recall rules for dividing integers Same sign: quotient is positive Different signs: quotient is negative

Dividing decimals Make the divisor a whole number by multiplying. EX:

Example continued

Dividing fractions When dividing fractions you multiply by the reciprocal. The reciprocal of 𝑎 𝑏 is 𝑏 𝑎 Remember that mixed numbers must be written as improper fractions! 1 1 2 = 3 2

Practice - 5 6 ÷− 2 3 16.9÷1.3 4 3 8 ÷ 1 2

Application How many 1 1 2 oz servings of cereal are in the larger 19 1 2 oz cereal box? 13 servings

assignment ODDS ONLY P.45 #7-25