Theory
Exercises
1. 
Calculate the square of a number
Difficulty: easy 
3

2. 
Choose the correct perfect square
Difficulty: easy 
3

3. 
Which of the following numbers end with digit 1
Difficulty: easy 
3

4. 
Find the square of given decimal numbers
Difficulty: easy 
3

5. 
Find two consecutive natural numbers
Difficulty: medium 
4

6. 
Find out which of the following digits end with 6
Difficulty: medium 
4

7. 
Examine if the given number is a perfect square
Difficulty: medium 
4

8. 
Calculate the square of given decimal numbers
Difficulty: medium 
4

9. 
Answer the following questions
Difficulty: medium 
4

10. 
Numbers end with digit 9
Difficulty: medium 
4

11. 
Find the square of a given number
Difficulty: medium 
4

12. 
Find the Pythagorean triplets
Difficulty: hard 
5

13. 
Find out the smallest number that should be multiplied with given number
Difficulty: hard 
5

14. 
Find the sum of the odd numbers
Difficulty: hard 
5

Tests
1. 
Training test
Difficulty: medium 
10

2. 
Training test
Difficulty: medium 
10
