Theory
Exercises
1. 
Find the solution
Difficulty: easy 
3

2. 
Determine the value
Difficulty: easy 
3

3. 
Find the two numbers
Difficulty: medium 
4

4. 
Find the number of tickets
Difficulty: medium 
4

5. 
Select the correct statement
Difficulty: medium 
4

6. 
Estimate the age
Difficulty: hard 
5

7. 
Find the value of m using substitution method
Difficulty: hard 
5

8. 
Evaluate the cost
Difficulty: hard 
5

Tests
1. 
Training test I
Difficulty: easy 
10

2. 
Training test II
Difficulty: medium 
12
