EXERCICE 2: Compléter les égalités suivantes : 87 min = ... ...... h .............. min ...... ..... h.............. min h ..... h ..... ...... min 145 min = 256 min = .. 78 sec = 400 sec = ... 1050 sec = 2,5 min = ... 2,5 min = ... min .............. S .... min .. ..... S min ...... ......... S .... min .............. S ..... S 1,5 h = ............... h .…............. min 1,5 h = ........ min
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Exercice 2 :
87 min = 1h 27 min
145 min = 2h 25 min
256 min = 4h 16 min
78 sec = 1 min 18 sec
400 sec = 6 min 40 sec
1050 sec = 17 min 30 s
2,5 min = 2 min 30 s
1,5 h = 1 h 30 min