Salut !
7 654 = 7,654 × 1 000 = 7,654 × 10³
17 000 000 = 1,7 × 10 000 000 = 1,7 × 10⁷
34,7 = 3,47 × 10 = 3,47 × 10¹
0,0076 = 7,6 ÷ 1 000 = 7,6 × 1/1000 = 7,6 × 1/10³ = 7,6 × 10⁻³
0,000872 = 8,72 ÷ 10 000 = 8,72 × 1/10000 = 8,72 × 1/10⁴ = 8,72 × 10⁻⁴
9 = 9 × 1 = 9 × 10⁰
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 ÷ 10³ × 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
