Glencoe Math: Course 2, Volume 1
GM
Glencoe Math: Course 2, Volume 1 View details
5. Divide Integers
Continue to next subchapter

Exercise 5 Page 246

Substitute 8 for x and -5 for y 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.

4

Practice makes perfect

To evaluate the given expression for x=8 and y=-5, first, we should substitute these values into the expression and simplify.

xy ÷ (-10)
8( -5) ÷ (-10)
- 8* 5 ÷ (-10)
-40 ÷ (-10)

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 both numbers are negative, so the quotient will be positive.

-40÷ (-10)
4

We can verify this using a calculator.