www.gsyw.net > 24点8×6点3%6点3×16点5 83×0点三七怎样巧算

24点8×6点3%6点3×16点5 83×0点三七怎样巧算

24.8×6.3-6.3×16.5+83×0.37 =6.3×(24.8-16.5)+8.3×3.

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