Besoins d'aide pour les exercices 64 et 65 svp

bonsoir

64
a ) 100 x 10 ³ = 100 000

b) 1 000 x 10 ⁻⁷ =  0,0001

c) 0.01 x 10 ⁻³ = 0,00001

65

a 100 : 10¹² = 10²/10¹² = 10 ⁻¹⁰ = 0,000000001

b) 10⁻⁷/10 000 = 10⁻⁷ / 10⁴ = 10 ⁻¹¹ = 0,0000000001

c) 1/0.001 = 1 /10⁻³ = 1 000

d) 0.0001 / 10⁸ = 10⁻⁴ /10⁸ = 10⁻¹² = 0,00000000001