25x37+78x75+41x25用简便运算怎么作?
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25x37+ 78x75+ 41x25
=25x37+78x3x25+41x25
=25x(37+234+41)x25
=25x312
=25x4x78
=100x78
=7800
=25x37+78x3x25+41x25
=25x(37+234+41)x25
=25x312
=25x4x78
=100x78
=7800
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