- Proportion (3 exercices)
- Proportions: workforce search (2 exercices)
- Percentage (4 exercices)
- Evolution: final value research (2 exercices)
- Evolution: initial value search (1 exercice)
- Rate trend (3 exercices)
- Evolution, problem and percentage of evolution (5 exercices)
- Successive developments: overall rate research (5 exercices)