Lesson 16: Practice Problems

Problem 1

Find the quotients:

$24 \div (- 6)$
$(- 15) \div 0.3$
$(- 4) \div - 20$

Problem 2

Find the quotients.

$\frac{2}{5} \div \frac{3}{4}$
$\frac{9}{4} \div (\frac{- 3}{4})$
$(\frac{- 5}{7}) \div (\frac{- 1}{3})$
$(\frac{- 5}{3}) \div \frac{1}{6}$

Problem 3

Is the solution positive or negative?

$2 \cdot x = 6$
$(- 2) \cdot x = 6.1$
$2.9 \cdot x = - 6.04$
$(- 2.473) \cdot x = - 6.859$

Problem 4

Find the solution mentally.

$3 \cdot (- 4) = a$
$b \cdot (- 3) = - 12$
$(- 12) \cdot c = 12$
$d \cdot 24 = - 12$

Problem 5

Find the products.

$(100) \cdot (- 0.09)$
$(- 7) \cdot (- 1.1)$
$(- 7.3) \cdot (5)$
$(- 0.2) \cdot (- 0.3)$

Problem 6

Which graphs could not represent a proportional relationship? Explain how you decided.