Sagot :
bonjour
789 x 104 = 7.89 x 10² x 1.04 x 10² = 8.2056 x 10 ⁴
0.67 x 10 ⁻³ = 6.7 x 10 ⁻⁴
0. 003 x 10⁶ = 3 x 10 ³
essaies de faire le dernier
Bonjour,
789 × 10⁴ = 7,89 × 100 × 10⁴ = 7,89 × 10² × 10⁴ = 7,89 × 10²⁺⁴ = 7,89 × 10⁶
0,67 × 10⁻³ = 6,7 ÷ 10 × 10⁻³ = 6,7 × 10⁻¹ × 10⁻³ = 6,7 × 10⁻¹⁻³ = 6,7 × 10⁻⁴
0,003 × 10⁶ = 3 ÷ 1 000 × 10⁶ = 3 × 10⁻³ × 10⁶ = 3 × 10⁻³⁺⁶ = 3 × 10³
12,8 × 10⁻¹ = 1,28 × 10 × 10⁻¹ = 1,28 × 10¹ × 10⁻¹ = 1,28 × 10¹⁻¹ = 1,28 × 10⁰