Find the cubes of the first five odd natural numbers and the cubes of the first five even natural numbers. What can you say about the parity of the odd cubes and even cubes?

A student was asked to final √961. He read it wrongly and found √691 to the nearest integer. How much small was his number from the correct answer?

Looking at the pattern, fill in the gaps in the following:

How many perfect cubes you can find from 1 to 100? How many from –100 to 100?

How many perfect cubes are there from 1 to 500? How many are perfect squares among these cubes?