Pose et effectue chaque opération : a) 12 h 41 min + 9 h 38 min b) 7 min 29 s + 54 min 51 s c) 19 h 26 min + 1 h 46 min d) 14 h 45 min 39 s + 11 h 51 min 38 s
Mathématiques
Audreey000
Question
Pose et effectue chaque opération :
a) 12 h 41 min + 9 h 38 min
b) 7 min 29 s + 54 min 51 s
c) 19 h 26 min + 1 h 46 min
d) 14 h 45 min 39 s + 11 h 51 min 38 s
a) 12 h 41 min + 9 h 38 min
b) 7 min 29 s + 54 min 51 s
c) 19 h 26 min + 1 h 46 min
d) 14 h 45 min 39 s + 11 h 51 min 38 s
1 Réponse
-
1. Réponse Eliott78
a) 12 h 41 min + 9 h 38 min
12h 41min
9h 38min
21h 79min = 22h 19minb) 7 min 29 s + 54 min 51 s
7min 29s
54min 51s
61min 80s = 62min 20s = 1h 02min 20s
c) 19 h 26 min + 1 h 46 min
19h 27min
1h 46min
20h 73min = 21h 13 min
d) 14 h 45 min 39 s + 11 h 51 min 38 s14h 45min 39s
11h 51min 38s
25h 96min 77s = 25h 97min 17s = 26h 37min 17s