Do you remember how items are sold in French-speaking
countries?
Fruits and vegetables are priced by the pound (une livre
=500 grammes) une livre ≠un livre
or the kilogram (un kilo=2 livres ou 1.000 grammes). To
give a price in French, say the amount of euros first, then
the cents: 7€80=sept euros quatre-vingts.
To review numbers, practice counting by tens from 10 to 100: dix, vingt,
trente, quarante, cinquante, soixante, soixante-dix, quatre-vingts,
quatre-vingt-dix, cent.