Calculer une soustraction sans retenue

Technique opératoire de la soustraction sans retenue
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[@serfassacademy4107]

utilisation plaquettes à 9 emplacements. voir google, youtube, serfass académy

[@stephanelegoueff5166]

Attention ! Il faut dire "Combien lui reste-t-il" et non pas "t-elle"....

[@lescoursdecole2329]

C'est vrai. Une erreur de langage.