99.99×0.8+11.11×2.8 9.99×2.22+3.33×3.34 简便运算

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99.99×0.8+11.11×2.89.99×2.22+3.33×3.34简便运算99.99×0.8+11.11×2.89.99×2.22+3.33×3.34简便运算99.99×0.8+11.11×

99.99×0.8+11.11×2.8 9.99×2.22+3.33×3.34 简便运算
99.99×0.8+11.11×2.8 9.99×2.22+3.33×3.34 简便运算

99.99×0.8+11.11×2.8 9.99×2.22+3.33×3.34 简便运算