Réponse :
Bonjour
Explications étape par étape
A = 10^3 ×10^5 = 10^3+5 = 10^8 = 100 000 000
B = 10^(-2) ×10^6 = 10^-2+6 = 10^4 = 10 000
C = 10^7/10^4 = 10^7-4 = 10^3 = 1000
D = 10^-3/10^-8 = 10^-3-8 = 10^-11 = 0,00000000001
E = 10^3 + 10² = 1000 + 100 = 1100
F = 10²×10^-5 /10^-4 = 10^-3/10^-4 = 10^-3+4 = 10
G = 1,5 × 10^-7 × 4 × 10² = 6 × 10^-5 = 0,00006
H = 0,005 × 200 = 1
I = -0,0004×3×10³ / 6000 = -0,0012×10³/6×10³ = -0,0012/6 = -0.0002
