0.25X1.6+1.4X0.25+0.25的简便计算
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0.25X1.6+1.4X0.25+0.25的简便计算0.25X1.6+1.4X0.25+0.25的简便计算0.25X1.6+1.4X0.25+0.25的简便计算0.25X(1.6十1.4十1)=0.
0.25X1.6+1.4X0.25+0.25的简便计算
0.25X1.6+1.4X0.25+0.25的简便计算
0.25X1.6+1.4X0.25+0.25的简便计算
0.25X(1.6十1.4十1)
=0.25X4
=1
=0.25X(1.6+1.4+1)=0.75
0.25x(1.6+1.4+1)
(1.6+1.4)0.25+0.25