Réponse:
1) 10² × 10⁶ = 10²+⁶ = 10⁸
2) 10`⁷ × 10`³ = 10`⁷+`³ = 10`¹⁰
3) 10⁹ × 10¹¹ = 10⁹+¹¹ = 10²⁰
4) 10¹² × 10`¹⁰ = 10¹²+`¹⁰ = 10²
5) 10`⁸ × 10⁶ = 10`⁸+⁶ = 10`²
6) 10²/10⁷ = 10²-⁷ = 10`⁵
7) 10⁴/10`³ = 10⁴-`⁷ = 10¹¹
8) 10`¹³/10¹⁰ = 10`¹³-¹⁰ = `²³
9) 10`⁶×10⁹/10`⁵ = 10`⁶+⁹/10`⁵ = 10³/`⁵ = 10³-`⁵ = 10⁸
