如题所述
3.5ä¹ä»¥ä¹ä»¥1å4åä¹1å ä¸1.25ä¹ä»¥2å10åä¹7å ä¸3.8é¤ä»¥5åä¹4
=3.5x5/4+5/4x27/10+3.8x5/4
=5/4x(3.5+2.7+3.8)
=5/4x10
=12.5
=3.5x5/4+5/4x27/10+3.8x5/4
=5/4x(3.5+2.7+3.8)
=5/4x10
=12.5
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第1个回答 2012-08-09
3.5x1.25+1.25x2.7+3.8÷0.8
=4.375+3.429+4.75
=12.554
=4.375+3.429+4.75
=12.554
第2个回答 2012-08-12
3.5乘以乘以1又4分之1加上1.25乘以2又10分之7加上3.8除以5分之4 =3.5x5/4+5/4x27/10+3.8x5/4 =5/4x(3.5+2.7+3.8) =5/4x10 =12.5
