Theory
Exercises
1. 
Give the normal form
Difficulty: easy 
1

2. 
Divisibility Check
Difficulty: easy 
2

3. 
Find the expanded form
Difficulty: medium 
7

4. 
Find the value of the variable
Difficulty: medium 
3

5. 
Find the remainder
Difficulty: medium 
3

6. 
Find out the missing number
Difficulty: medium 
3

7. 
Solve the question
Difficulty: medium 
4

8. 
Find the quotient
Difficulty: hard 
6

Tests
1. 
Training test
Difficulty: medium 
12
