2.5×2.4脱式简便计算要像X×Q
=XXXxQ
=XQ
2.5×2.4
=2.5x4x0.6
=10x0.6
=6
谢谢,请采纳
=2.5x4x0.6
=10x0.6
=6
谢谢,请采纳
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第1个回答 2016-12-19
2.5×2.4
=2.5×(0.4×6)
=(2.5×0.4)×6
=1×6
=6
=2.5×(0.4×6)
=(2.5×0.4)×6
=1×6
=6
第2个回答 2016-12-19
=2.5*(2+0.4)
=2.5*2+2.5*0.4
=5+1
=6
=2.5*2+2.5*0.4
=5+1
=6