(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:2024/06/20 11:59:20
![(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](/uploads/image/z/1093993-25-3.jpg?t=%28100%2B0.123%2B0.245%2B8.9%29x%280.123%2B0.245%2B8.9%2B12.71%29-%28100%2B0.123%2B0.245%2B8.9%2B12.71%29x%280.123%2B0.245%2B8.9%29%E7%AD%89%E4%BA%8E%E5%A4%9A%E5%B0%91)
(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