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4-Cm19 14-15

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4-Cm19 14-15

  1. 1. Calcul mental N°19 “Différentes écritures d’une fraction”
  2. 2. Donner une écritureDonner une écriture fractionnaire de :fractionnaire de : Diapositive 1Diapositive 1 1,5
  3. 3. CompléterCompléter :: Diapositive 2Diapositive 2 = ... 25% 12
  4. 4. Compléter :Compléter : Diapositive 4Diapositive 4 = 15 5 27 ...
  5. 5. Diapositive 4Diapositive 4 Calculer:Calculer: − 5 5 3
  6. 6. Calculer :Calculer : Diapositive 5Diapositive 5 + -7 6 5 11
  7. 7. FIN
  8. 8. CORRECTION
  9. 9. Diapositive 1Diapositive 1 = = 15 1 5 10 , 3 2
  10. 10. Diapositive 2Diapositive 2 = = = 25 1 25% 100 4 3 12
  11. 11. Diapositive 3Diapositive 3 = 15 5 27 9
  12. 12. Diapositive 4Diapositive 4 − = − − = = 5 15 5 5 3 3 3 15 5 3 10 3
  13. 13. Diapositive 5Diapositive 5 × × + × × + = = + = = 11 5 11 5 -7 6 -7 6 5 11 5 11 -77 3 -47 47 - 5 0 555 55 55

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