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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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
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
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
=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
原式=33.33(3×2222+1×3334)=33.33×10000=333300 原式=9999×(1+9999)=99990000 提取公因式可以化简式子
9.9×9.9+0.99他们的公因式可以是0.99或者9.9
如提取9.9,则有原式=9.9×(9.9+0.1)=99
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原式=33.33(3×2222+1×3334)=33.33×10000=333300 原式=9999×(1+9999)=99990000 提取公因式可以化简式子
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99.99×2222+33.33×3334
=33.33[(3×2222)+(1×3334)]
=33.33(6666+3334)
=33.33×10000
=333300
9999+9999²
=9999(1+9999)
=9999×10000
=99990000
这样计算就是为了计算方便,简单!
9.9×9.9+0.99
=9.9(9.9+0.1)
=9.9×10
=99