Réponse :
bonsoir
a . 9.2 x 27 x 3.2 x 10 ¹⁰ = 794. 88 x 10 ¹⁰ = 7 .9488 x 10 ¹²
b. 2.73 x 7 .25 x 125 x 10 ⁻¹ = 2 474.0625 x 10 ⁻¹ = 2 .4740625 x 10 ²
c. 7.5 x 10 ⁶ x 1 /50 000 = 7.5 x 10 ⁶ x 5 x 10 ⁻⁴ = 37.5 x 10 ² = 3.75 x 10³
d. 8.2 x 10 ⁻⁴ x 4 x 10 ⁻⁵ = 32.8 x 10 ⁻⁹ = 3.28 x 10 ⁻⁸
e. 45 x 5 x 10 ¹ : 9 x 10 ⁶ = 225 x 10 : 9 x 10 ⁶ = 25 x 10 ⁻⁵ = 2.5 x 10 ⁻⁴
f. 24 x 3 x 10 ⁻⁸ : 2 x 10 ² = 72 x 10 ⁻⁸ : 2 x 10 ² = 36 x 10 ⁻¹⁰ = 3.6 x 10 ⁻⁹
