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# 5-Cm28 13-14

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### 5-Cm28 13-14

1. 1. Calcul mental “Les opérations avec des fractions” Série n°3
2. 2. Diapositive 1Diapositive 1 5 1 6 2 + Calculer :
3. 3. Diapositive 2Diapositive 2 Comparer: 9 8 ..... 50 25
4. 4. Diapositive 3Diapositive 3 Compléter : 3 ...... 8× =
5. 5. Diapositive 4Diapositive 4 Calculer : de 80€ 3 4
6. 6. Diapositive 5Diapositive 5 Donner la dimension réduite de 21 m à l’échelle 1 7
7. 7. FIN
8. 8. CORRECTION
9. 9. Diapositive 1Diapositive 1 5 1 5 1 3 6 2 6 2 3 5 3 6 8 6 6 × + = + × = + =
10. 10. Diapositive 2Diapositive 2 9 8 50 25 8 16 25 50 < =
11. 11. Diapositive 3Diapositive 3 3 8 8 3 × =
12. 12. Diapositive 4Diapositive 4 Calculer : de 80€ 3 4 3 80 80 3 4 2 60 4 3 0 × = × = × =
13. 13. Diapositive 5Diapositive 5 Donner la dimension réduite de 21 m à l’échelle 1 7 1 21 21: 7 37 m× = =