发布网友 发布时间:2024-10-24 09:39
共5个回答
热心网友 时间:2024-10-26 02:57
125x3x7+21x875
=125x21+21x875
=21x(125+875)
=21x1000
=21000
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热心网友 时间:2024-10-26 02:52
(125+125+125)x7+21x875怎么巧算
=125×3×7+21×875
=21×(125+875)
==21000
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热心网友 时间:2024-10-26 02:54
(125+125+125)x7+21x875
=3x125X7十21x875
=21x125十21x875
=21x(125+875)
=21x1000
=21000
热心网友 时间:2024-10-26 02:51
解:原式=125×3×7+21×875
=(125+875)×21
=1000×21
=21000
热心网友 时间:2024-10-26 02:51