(100+0.123+0.245+8.9)x(0.123+0.245+8.9+12.71)-(100+0.123+0.245+8.9+12.71)x(0.123+0.245+8.9)等于多少

来源：学生作业帮助网 编辑：作业帮 时间：2024/07/18 15:35:03
(100+0.123+0.245+8.9)x(0.123+0.245+8.9+12.71)-(100+0.123+0.245+8.9+12.71)x(0.123+0.245+8.9)等于多少
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(100+0.123+0.245+8.9)x(0.123+0.245+8.9+12.71)-(100+0.123+0.245+8.9+12.71)x(0.123+0.245+8.9)等于多少
(100+0.123+0.245+8.9)x(0.123+0.245+8.9+12.71)-(100+0.123+0.245+8.9+12.71)x(0.123+0.245+8.9)等于多少

(100+0.123+0.245+8.9)x(0.123+0.245+8.9+12.71)-(100+0.123+0.245+8.9+12.71)x(0.123+0.245+8.9)等于多少
(100+0.123+0.245+8.9)x(0.123+0.245+8.9+12.71)-(100+0.123+0.245+8.9+12.71)x(0.123+0.245+8.9)
=(100+0.123+0.245+8.9)x(0.123+0.245+8.9）+(100+0.123+0.245+8.9)x12.71-(100+0.123+0.245+8.9)x(0.123+0.245+8.9)-12.71x(0.123+0.245+8.9)
=(100+0.123+0.245+8.9)x12.71-12.71x(0.123+0.245+8.9)
=【(100+0.123+0.245+8.9)-（0.123+0.245+8.9)】x12.71
=【100+0.123+0.245+8.9-0.123-0.245-8.9】x12.71
=100x12.71
=1271

1271

(100+0.123+0.245+8.9)x(0.123+0.245+8.9+12.71)-(100+0.123+0.245+8.9+12.71)x(0.123+0.245+8.9)
=(100+0.123+0.245+8.9)x(0.123+0.245+8.9)+(100+0.123+0.245+8.9)x12.71-(100+0.123+0.245+8.9)x(0.123+0.245+8.9)-(100+0.123+0.245+8.9)x12.71
=0

主要运用乘法分配率
(100+0.123+0.245+8.9)x(0.123+0.245+8.9+12.71)-(100+0.123+0.245+8.9+12.71)x(0.123+0.245+8.9)
=【(100+0.123+0.245+8.9)x(0.123+0.245+8.9）+(100+0.123+0.245+8.9)x12.71】— 【(100+0.123+0.2...

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主要运用乘法分配率
(100+0.123+0.245+8.9)x(0.123+0.245+8.9+12.71)-(100+0.123+0.245+8.9+12.71)x(0.123+0.245+8.9)
=【(100+0.123+0.245+8.9)x(0.123+0.245+8.9）+(100+0.123+0.245+8.9)x12.71】— 【(100+0.123+0.245+8.9)x(0.123+0.245+8.9)+12.71x(0.123+0.245+8.9)】
=(100+0.123+0.245+8.9)x12.71—12.71x(0.123+0.245+8.9)
=【(100+0.123+0.245+8.9)—（0.123+0.245+8.9)】x12.71
=【100+0.123+0.245+8.9—0.123—0.245—8.9】x12.71
=100x12.71
=1271
希望你看明白了！！

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=12.71x[(100+0.123+0.245+8.9)-(0.123+0.245+8.9)]
=1271

(100+0.123+0.245+8.9)x(0.123+0.245+8.9+12.71)-(100+0.123+0.245+8.9+12.71)x(0.123+0.245+8.9)等于多少 0.245( )=245( ) 0.245吨是多少千克 0.245化成分数是多少 8.9. 8.9. 8.9 8.9. 8.9. 8.9. 8.9. 8.9 8.9. 8.9. 8.9. 8.9. 8.9. 8.9.