Bonsoir !
Exo 65:
a) 0,000023 = 2,3 x 10^-5
b) 45 000 000 = 4,5 x 10^7
c) 37,5 x 10^9 = 3,75x10^1x10^9=3,75x10^10
d) 0,02 x 10-3 = 2x10^-2x10^-3 =2x10^-5
e) 12,25 = 1,225 x 10^1
f) 175 = 1,75 x 10^2
Bon courage.
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Bonsoir !
Exo 65:
a) 0,000023 = 2,3 x 10^-5
b) 45 000 000 = 4,5 x 10^7
c) 37,5 x 10^9 = 3,75x10^1x10^9=3,75x10^10
d) 0,02 x 10-3 = 2x10^-2x10^-3 =2x10^-5
e) 12,25 = 1,225 x 10^1
f) 175 = 1,75 x 10^2
Bon courage.