This lesson needs some real sentences to demonstrate how to use the expressions.
Example "Add a liter and a half of water" = Ajouter un LITRE et demi d’eau" but "Add a liter and a third of water" == "Ajouter un litre et UN tiers d'eau". Sentences along these lines. I apologize if there is another lesson showing this. If there is it should be linked. Note also I am confused by the inconsistency of online translators with the above examples..
Additional difficult sentences " One third of students had a passing grade" == "Un tiers des étudiants ont obtenu une note de passage" OR " Un tiers des étudiants A obtenu une note de passage"??? I have seen both.