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数学高手请猛戳这里啦啦啦啦啦,谢谢啦啦啦啦啦啦!99.99×2222+33.33×33349999+9999²请写出具体过程最好写出为什么要这样写.9.9×9.9+0.99

题目详情
数学高手请猛戳这里啦啦啦啦啦,谢谢啦啦啦啦啦啦!
99.99×2222+33.33×3334

9999+9999²

请写出具体过程最好写出为什么要这样写.
9.9×9.9+0.99
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答案和解析
99.99×2222+33.33×3334
=99.99×2222+33.33×3333+33.33
=99.99×(2222+1111)+33.33
=99.99×3333+3333×0.01
=(99.99+0.01)×3333
=333300
9999+9999²
=9999(1+9999)
=99990000