作业帮数学高手请猛戳这里啦啦啦啦啦,谢谢啦啦啦啦啦啦!
来源：学生作业帮 编辑：拍题作业网作业帮 分类：数学作业 时间：2024/05/01 18:14:03
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
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
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
再问： 9.9×9.9＋0.99
再答： 9.9×9.9＋0.99 =9.9×9.9＋9.9×0.1 =9.9×（9.9+0.1） =99
=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
再问： 9.9×9.9＋0.99
再答： 9.9×9.9＋0.99 =9.9×9.9＋9.9×0.1 =9.9×（9.9+0.1） =99