第1个回答 2017-06-19
=34.5*2.9+34.5*0.1
=34.5*(2.9+0.1)
=34.5*3
=103.5
第2个回答 2017-06-19
34.5×2.9+3.45
=34.5×2.9+34.5×0.1
=34.5×(2.9+0.1)
=34.5×3
=103.5本回答被网友采纳
第3个回答 2017-06-19
34.5*2.9+3.45=3.45*29+3.45=3.45*(29+1)=3.45*30=103.5
第4个回答 2017-06-19
=34.5×2.9+34.5×0.1
=34.5×(2.9+0.1)
=34.5×3=103.5
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第5个回答 2017-06-19
34.5*2.9+3.45简便方法
=34.5x2.9+34.5x0.1
=34.5x(2.9+0.1)
=34.5x3
=103.5