Notation scientifique – Exercices corrigés : 2eme Secondaire – PDF à imprimer

Exercice 1

Donner l’écriture décimale

a.  8,3 x 10⁵ =  __________________________________________________________

b. 4,5 x 10³  =  __________________________________________________________

c. 1,2 x 10^-4 =  ___________________________________________________________

d. 7,35 x 10⁶ =  __________________________________________________________

e. 9,81 x 10^-5 =  __________________________________________________________

f. 4,513 x 10⁸ =  __________________________________________________________

g. 4,513 x 10^-4 =  _________________________________________________________

h. 4,513 x 10² =  _________________________________________________________

Donner l’écriture scientifique

a. 540 000 000 000 =  _________________________________________________________

b. 650 000 000 =  _____________________________________________________________

c. 0,000 000 006 =  ____________________________________________________________

d. 1 048 000 000 000 =  ________________________________________________________

e. 0,000 002 64 =  _____________________________________________________________

f. 20 300 000 =  _______________________________________________________________

g. 673,185 =  _________________________________________________________________

h. 8 070 000 000 =  ____________________________________________________________

Exercice 3

Donner l’écriture scientifique

a. 6 300 x 10⁴ =  ______________________________________________________________

b. 450 x 10⁶ =  _______________________________________________________________

c. 0,000 67 x 10^-5 =  ___________________________________________________________

d. 6 300 x 10¹² =  _____________________________________________________________

e. 0,012 500 x 10^-14 =  _________________________________________________________

f. 0,012 500 x 10^-12 =  __________________________________________________________

g. 0,012 500 x 10¹⁵ =  __________________________________________________________

h. 81 500 000 x 10²³ =  _________________________________________________________

Exercice 4

Comparer :

a. 9,45 x 10⁸  et  8,31 x 10⁹  =  __________________________________________________________

b. 9 x 10³ et  9 x 10² =  ________________________________________________________________

c. 3,5 x 10¹³ et  2,65 x 10¹³  = ___________________________________________________________

d. 7,2 x 10^-15 et  7,2 x 10¹³  = ____________________________________________________________

e. 1,6 x 10^-9 et  1,5 x 10^-10  = ____________________________________________________________

Exercice 5

Donner l’écriture décimale ou scientifique et ranger les nombres dans l’ordre croissant

a. 4,513 x 10^-9 =  ______________________________________________________________

b. 7,1 x 10¹³ =  ________________________________________________________________

c. 4000,007 =  ________________________________________________________________

d. 0,700 600 000 =  ____________________________________________________________

e. 81 500 000 x 10¹³ =  __________________________________________________________

f. 81 500 000 x 10^-34 =  __________________________________________________________

Exercice 6

Donner l’écriture scientifique des deux nombres puis les comparer :

a. 64,5 x 10⁸    631 x 10⁷

_____________________________________________________________________________________

b. 8 200 x 10³ 0,82 x 10⁶

_____________________________________________________________________________________

c. 0,04 x 10^-7 400 x 10^-10

_____________________________________________________________________________________

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