Sur une feuille à carreaux. Mettre son nom dans la marge
   6 524 - 5 632 =                                                  56 402 - 6 875 =
   75 804 - 9 686 =                                                45 628 - 5 687 =
   4 583 x 6 =                                                        4 785 x 9 =
   7 436 x 38 =                                                      7 813 x 68 =
   450 x 405 =                                                       432 x 304 =