Calcul mental
   “Racines carrées”
      série n°3
Pour les 4 diapositives
suivantes calculer et écrire
le résultat sous la forme
d’un nombre entier.
Diapositive 1




           10 × 10
Diapositive 2




           64 + 36
Diapositive 3




                18
                2
Diapositive 4




            (         )
                          2
                2 3
Diapositive 5


Ecrire sous la forme a b



                20
FIN
CORRECTION
Diapositive 1




     10 × 10 = 10
Diapositive 1




     10 × 10 = 10
Diapositive 2




   64 + 36 = 8 + 6 = 14
Diapositive 2




   64 + 36 = 8 + 6 = 14
Diapositive 2




   64 + 36 = 8 + 6 = 14
Diapositive 3



   18    18
       =
     2    2
           = 9
           =3
Diapositive 3



   18    18
       =
     2    2
           = 9
           =3
Diapositive 3



   18    18
       =
     2    2
           = 9
           =3
Diapositive 3



   18    18
       =
     2    2
           = 9
           =3
Diapositive 4




(               )
                    2
    2 3                 = 4 × 3 = 12
Diapositive 4




(               )
                    2
    2 3                 = 4 × 3 = 12
Diapositive 4




(               )
                    2
    2 3                 = 4 × 3 = 12
Diapositive 5



    20 = 4 × 5
                = 4× 5
                =2 5
Diapositive 5



    20 = 4 × 5
                = 4× 5
                =2 5
Diapositive 5



    20 = 4 × 5
                = 4× 5
                =2 5
Diapositive 5



    20 = 4 × 5
                = 4× 5
                =2 5

3-Cm25