91Ó°ÊÓ

Multiply or divide the mixed numbers. Write the answer as a mixed number or whole number. $$12 \frac{4}{5} \div\left(-2 \frac{3}{5}\right)$$

Find the LCM. $$16,24, \text { and } 30$$

Simplify if possible. $$\frac{-9}{-10}$$

Solve the equations. Write the answers as fractions or whole numbers. $$\frac{a}{4}=12$$

Determine whether the number is prime, composite, or neither. $$21$$

Find the LCM. \(6,12,18,\) and 20

Multiply the fractions and simplify to lowest terms. Write the answer as an improper fraction when necessary. $$\frac{7 z}{12} \cdot \frac{4}{z}$$

Solve the equations. Write the answers as fractions or whole numbers. $$-\frac{v}{10}=-4$$

Find the LCM. $$21,35,50, \text { and } 75$$

Determine whether the number is prime, composite, or neither. $$97$$