: * =....
* *=..
*-razr
:-dzielenie
(⁷/₁₀)¹⁰:7¹⁰×10¹¹=(⁷/₁₀:7)¹⁰×10¹¹=10⁻¹⁰×10¹¹=10
(⅕)⁸×(-25)⁸×(⅕)⁸=[(⅕×⅕×(-25)]⁸=(-1)⁸=1
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(⁷/₁₀)¹⁰:7¹⁰×10¹¹=(⁷/₁₀:7)¹⁰×10¹¹=10⁻¹⁰×10¹¹=10
(⅕)⁸×(-25)⁸×(⅕)⁸=[(⅕×⅕×(-25)]⁸=(-1)⁸=1