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Calcul mental
N°11
“Le code des opérations”
17 + 13 - 15
Diapositive 1Diapositive 1
25 - 15 + 9 - 8
Diapositive 2Diapositive 2
3 × 2 + 7
Diapositive 3Diapositive 3
3 × 5 : 2
Diapositive 4Diapositive 4
(2 + 3) × 4
Diapositive 5Diapositive 5
FIN
CORRECTION
17 + 13 - 15
= 30 - 15 = 15
Diapositive 1Diapositive 1
25 - 15 + 9 - 8
= 10 +1 = 11
Diapositive 2Diapositive 2
3 × 2 + 7
= 6 + 7 = 13
Diapositive 3Diapositive 3
3 × 5 : 2
= 15 : 2 = 7,5
Diapositive 4Diapositive 4
(2 + 3) × 4
= 5 × 4 = 20
Diapositive 5Diapositive 5

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