Theory
Exercises
1. 
Select the suitable choice
Difficulty: easy 
3

2. 
Form the number
Difficulty: easy 
2

3. 
Determine the variable
Difficulty: easy 
2

4. 
Calculate the total number of chocolate
Difficulty: easy 
4

5. 
Say true or false
Difficulty: medium 
4

6. 
Calculate the distance covered
Difficulty: medium 
4

7. 
Estimate the total number of toys can be packed
Difficulty: medium 
4

8. 
Calcuate the son's age
Difficulty: medium 
4

9. 
Write the rule
Difficulty: hard 
5

10. 
Find the age
Difficulty: hard 
5

11. 
Complete the sequence
Difficulty: hard 
5

Tests
1. 
Training test
Difficulty: medium 
9
