=40*8+40*0.1+1.2*8+1.2*0.1+5.37*20-5.37+1*92.5+0.1*92.5
=320+4+9.6+0.12+107.4-5.37+92.5+9.25
=537.5
简便计算：41.2×8.1+5.37×19+1.1×92.5
1个回答
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