Theory
Exercises
1. 
Convert the tree diagram
Difficulty: easy 
1.5

2. 
Say true or false
Difficulty: easy 
1

3. 
Convert tree diagrams into algebraic expressions
Difficulty: easy 
1

4. 
Choose the correct answer
Difficulty: medium 
2

5. 
Find the age
Difficulty: medium 
2

6. 
Select the suitable choice
Difficulty: medium 
2

7. 
Find the numeric expression
Difficulty: medium 
2

8. 
Calculate the savings
Difficulty: hard 
4

9. 
Find the expenses
Difficulty: hard 
4

10. 
Answer the questions
Difficulty: hard 
4

Tests
1. 
Training test
Difficulty: easy 
6.5

2. 
Training test
Difficulty: medium 
9
