What is the perfect square after $16$?

Why $20$ is not a perfect square?

Can you write down the squares of natural numbers upto $20$, by adding odd numbers? You can proceed like this

$1^2=1$

$2^2=1+3=4$

$3^2=4+5=9$

$4^2=9+7=16$

What is the sum of the seventh and eighth triangular numbers?

Look at this number pattern:

$1=1$

$4=1+2+1$

$9=1+2+3+2+1$

$16=1+2+3+4+3+2+1$

Can you split some more perfect squares like this?

What is the relation between the number of consecutive odd numbers from $1$ and their sum?

What is the sum of $30$ consecutive odd numbers starting from $1$.

The square of $10$ is $100$. What is the square of $100$?

In the square of $1000$, how many zeros are there after $1?$