Find the square root of $121$ using repeated subtraction:

Find the square root of $196$ using repeated subtraction:

Find the square root of $225$ using repeated subtraction:

Find the least square number exactly divisible by each one of the following numbers: $8,9,10$

Find the least square number exactly divisible by each one of the following numbers: $20,15,9,6$

Find the least square number exactly divisible by each one of the following numbers: $4,6,10,18$

Write the prime factorisation of $4761$ and hence their square roots:

Write the prime factorisation of $3364$ and hence their square root:

Write the prime factorisation of $9025$ and hence their square roots: