Exercise 1

Ram is $8$ years old. His friend is $1$ year younger than him. The age of Ram's friend is _____.

_____$\times 9=15\times 6$

Write any four multiples of $5$ greater than $15$ and less than $55$.

Write any four multiples of $6$ greater than $18$ and less than $66$.

Write any four multiples of $9$ greater than $18$ and less than $99$.

Write any four multiples of $10$ greater than $30$ and less than $110$.

_____$÷11=11$

_____$÷9=9$