Theory
Exercises
1. 
Answer the following
Difficulty: easy 
5

2. 
Divide the following
Difficulty: easy 
2

3. 
Identify the error and correct it
Difficulty: easy 
3

4. 
Spot the error and find the reason
Difficulty: medium 
4

5. 
Say yes or no
Difficulty: medium 
4

6. 
Answer the following
Difficulty: medium 
4

7. 
Determine the number
Difficulty: medium 
4

8. 
Solve the following questions
Difficulty: hard 
7

9. 
State true or false and solve the question
Difficulty: hard 
5

10. 
Simplify the expression
Difficulty: hard 
5

Tests
1. 
Training test
Difficulty: medium 
12
