• Réaliser ces conversions :

30 min = _ _ _ _ _ h                            45 min = _ _ _ _ _ h                        15 min = _ _ _ _ _ h

120 min = _ _ _ _ _ h                         72 min = _ _ _ _ _ h                        96 min = _ _ _ _ _ h

0,5 h = _ _ _ _ min                                      0,25 h = _ _ _ _ _ min                              0,75 h = _ _ _ _ _ min

3h = _ _ _ _ _ min                                        2,3 h = _ _ _ _ min    

• Correction :