(9+9²+9³)乘0.01的简便运算
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![(9+9²+9³)乘0.01的简便运算](/uploads/image/z/13387120-16-0.jpg?t=%289%2B9%26%23178%3B%2B9%26%23179%3B%29%E4%B9%980.01%E7%9A%84%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97)
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(9+9²+9³)乘0.01的简便运算
(9+9²+9³)乘0.01的简便运算
(9+9²+9³)乘0.01的简便运算
[9*(1+9+81)]*0.01
=8.19
(9+9²+9³)×0.01
=(9×1+9×9+9×9×9)×0.01
=9×(1+9+9×9)×0.01
=9×91×0.01
=819×0.01
=8.19