91Ó°ÊÓ

Find the least common multiple of the numbers.

55, 77

Find the least common multiple of the numbers.

27,189

A common number used for calculations in chemistry is Avogadro’s number, which is approximately equal to $6.02×{10}^{23}$. Write this number in standard form.

Which number is not equivalent to $\frac{40}{66}$?

1. $\frac{20}{33}$
2. $\frac{60}{99}$
3. $0.\stackrel{¯}{6}$
4. $0.\stackrel{¯}{60}$

Which number is not equivalent to -1.5?

1. $-1.\stackrel{¯}{5}$
2. $\mathbf{-}\frac{\mathbf{3}}{\mathbf{2}}$
3. $\mathbf{-}\mathbf{1}\mathbf{.}\stackrel{¯}{\mathbf{45}}$
4. $-\frac{7}{2}$

Write $0.\stackrel{¯}{475}$as a fraction. Describe the steps you take to write the fraction.

Solve the inequality. Graph your solution.

$\frac{x}{-4}≤-6$

Show that the number is rational by writing it as a quotient of two integer.

$\mathbf{5}\frac{\mathbf{4}}{\mathbf{7}}$

Show that the number is rational by writing it as a quotient of two integer.

$\mathbf{-}\mathbf{1}\frac{\mathbf{1}}{\mathbf{3}}$

Solve the inequality. Graph your solution.

$\frac{y}{3}≤-12$