Theory
Exercises
1. 
Find the right property of rational number
Difficulty: easy 
3

2. 
Find the additive identity for rationals
Difficulty: easy 
2

3. 
Determine the multiplicative identity for rationals
Difficulty: easy 
2

4. 
Find the closure property
Difficulty: medium 
4

5. 
Determine the commutative property
Difficulty: medium 
4

6. 
Evaluate the associative property
Difficulty: medium 
4

7. 
Estimate the closure property of multiplication
Difficulty: hard 
2

8. 
Determine the commutative property of multiplication
Difficulty: hard 
2

9. 
Evaluate the associative property of multiplication
Difficulty: hard 
2

Tests
1. 
Training test
Difficulty: medium 
6
