6-Cm17
Transcript of 6-Cm17
Calcul mental “Fraction d’une durée”
Pour chaque diapositive,
effectuer les calculs suivants …
5 de 16min
8
Diapositive 1Diapositive 1
3 de 21 s
7
Diapositive 2Diapositive 2
2 de 1 h
3
Diapositive 3Diapositive 3
3 de 28min
4
Diapositive 4Diapositive 4
4 de 15 h
5
Diapositive 5Diapositive 5
FIN
CORRECTION
(16min 8) 5
2min 5
5 de
10mi
16min8
n
÷ ×
= ×=
=
Diapositive 1Diapositive 1
2mi
5 de 16min (16
n 5 1
min 8) 5
m
8
0 in= ×=
= ÷ ×
Diapositive 1Diapositive 1
5 de 16min (16min 8) 5
8
2m
in 5 10min
= ÷
=
×
= ×
Diapositive 1Diapositive 1
5 de 16min (16min 8) 5
8 2min 5 10min
= ÷ ×
= ×=
Diapositive 1Diapositive 1
(21 s 7) 3
3 s 3
3
de 2
9 s
1 s7
÷ ×
= ×=
=
Diapositive 2Diapositive 2
3
3 de 21 s (21 s
s 3
7
)
9
37
s= ×=
= ÷ ×
Diapositive 2Diapositive 2
3 de 21 s (21 s 7) 3
7
3 s 3 9 s
= ×
=
÷
= ×
Diapositive 2Diapositive 2
3 de 21 s (21 s 7) 3
7 3 s 3 9 s
= ÷ ×
= ×=
Diapositive 2Diapositive 2
(60min 3) 2
20min 2
2 de
40mi
1 h3
n
= ÷ ×
= ×=
Diapositive 3Diapositive 3
20mi
2 de 1 h (60min
n 2
3
40mi
2
n
)3
==
×
×
= ÷
Diapositive 3Diapositive 3
2 de 1 h (60min 3) 2
3
20
min 2 40min
=
=
÷ ×
= ×
Diapositive 3Diapositive 3
2 de 1 h (60min 3) 2
3 20min 2 40min
= ÷ ×
= ×=
Diapositive 3Diapositive 3
(28min 4) 3
7min 3
3 de
21mi
28min4
n
÷ ×
= ×=
=
Diapositive 4Diapositive 4
7mi
3 de 28min (28
n 3 2
min 4) 3
m
4
1 in= ×=
= ÷ ×
Diapositive 4Diapositive 4
3 de 28min (28min 4) 3
4
7m
in 3 21min
= ÷
=
×
= ×
Diapositive 4Diapositive 4
3 de 28min (28min 4) 3
4 7min 3 21min
= ÷ ×
= ×=
Diapositive 4Diapositive 4
(15h 5) 4
3h 4
4
de 15
h5
2h
1
÷
×=
= ×
=
Diapositive 5Diapositive 5
3h 4 12
4 de 15 h (15h 5) 4
5
h
= ÷
= ×=
×
Diapositive 5Diapositive 5
4 de 15 h (15h 5) 4
5
3h 4 12h
= ÷
=
×
= ×
Diapositive 5Diapositive 5
4 de 15 h (15h 5) 4
5 3h 4 12h
= ÷ ×
= ×=
Diapositive 5Diapositive 5