Write the first five multiples of $5$.

Write the first five multiples of $10$.

Write the first five multiples of $7$.

Write the first five multiples of $12$.

Write the multiples of $3$ that are less than $40$.

Write the multiples of $5$ that are less than $40$.

Find the common multiples of $3$ and $5$ that are less than $40$.

Find the common multiples of $3$ and $4$ that are less than $50$.

The common multiples of $3$ and $4$ are multiples of _____ .