Common Factors and Common Multiples

The LCM of the given numbers is not less than the biggest number among them.

Choose the correct answer.

A common multiple of $3$ and $5$ is:

Which of the following statement is correct?

$15$ is a common multiple of $3$ and $15$.

Write whether the given statement is correct or wrong?

$12$ is a common multiple of $2$ and $3$.

Check whether $10$ is a common multiple of $2$ and $5$.

List the first three common multiples of:

$6, 8$

List the first three common multiples of:

$2,5$

List the first three common multiples of:

$2,4$

List the first three common multiples of:

$4,5$

Circle the number that is a common multiple of $5$ and $3$.

$40 70 60$

 Encircle the multiples of $2$ and cross the multiples of $3$. Find the common multiples of $2$ and $3$.

Sheetal waters her cactus plant every $10$ days while she waters her dahlia every $3$ days. If she watered both plants today, in how many number of days will she water both plants again?

Write the common multiples of $18$ and $24$.

Write a multiple of $8$ which is also a multiple of $7$.

Find the prime factors of the following number:

$135$

There is a square mat to cover a field of $55 m$. Long and $22 m$ wide. Find out at least how many laying mats will be required of the same measurements.

Find the LCM of the following numbers.

$14, 28, 35, 56$

Find out those common multiples of the following numbers-pairs whose value is less than $80$:

$7$ and $11$

Write the first common multiples of $2$ and $7.$

Write the first common multiples of $3$ and $6.$