Sagot :
Réponse :
Bonsoir,
Explications étape par étape
c'est à toi de trouver les résultats car il est facile
a) 12min = 12 x 60 = ......sec.
9min 48sec. = (9x60) + 48 = ...........sec
3h29min = (3x3600)+(29x60) = 10800 +1740 =..................sec
2h7min9sec = (2x3600) +(7x60) +9 = ...................sec
b) en minutes :
6h = 6x60 = .............min.
1h15 = (1x60) + 15 = .............min
5h48min = (5x60) +48 = ................min
1j23h17min = ( 24x60) +(23x60)+17 = 1440 +1380+17 =.....................min.
c) 1896÷60 =60x31 +36
37193÷60 = 6199x60+53
619÷60 = 10+19
1896 min = 1896x60 = ..............sec
37193s = 10h 19 min 53sec
d) 3876s = 1h 4min36sec
18178s = 5h 2min58sec
88400s = 24h20sec
16198s = 4h29min58sec
tu complètes ce que t'as à compléter .
Bon courage .