Auzou Multiplication challenge book

"A box of games to understand, memorize and test your multiplication skills! 4 progressive games, clear rules and short games to have fun with the multiplication tables. - Multi'briques: it's up to you to find the operation from a result! - Petits trous: find the hidden factor or result of an operation before your opponent does! - Bataille: steal your opponent's cards... without getting the result of each operation wrong! - Rapidator: be the most rapide to find the highest result among several operations."