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Glencoe Math: Course 2, Volume 1

GM

Glencoe Math: Course 2, Volume 1 View details

5. Divide Integers

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Exercise 30 Page 249

Substitute 12 for r in the expression. When dividing real numbers, the quotient will be positive if the signs are the same and it will be negative if the signs are different.

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Practice makes perfect

To evaluate the given expression for r=12, first, we should substitute 12 for r in the given expression.

-12 ÷ r

r= 12

-12 ÷ 12

When dividing real numbers, the quotient will be positive if the signs are the same and it will be negative if the signs are different. cc Same Sign & Different Signs (+)÷(+)=(+) & (+)÷(-)=(-) (-)÷(-)=(+) & (-)÷(+)=(-) In our case one number is positive and one number is negative, so the quotient will be negative.

-12÷ 12

Calculate quotient

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We can verify this using a calculator.

Subchapter links

Guided Practice p.246

Independent Practice p.247-248

H.O.T. Problems p.248

Standardized Test Practice p.248-250

Extra Practice p.249

Common Core Review p.250