简便计算题28.67*67+32*28.67+573.4*0.05

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简便计算题28.67*67+32*28.67+573.4*0.05
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简便计算题28.67*67+32*28.67+573.4*0.05
简便计算题28.67*67+32*28.67+573.4*0.05

简便计算题28.67*67+32*28.67+573.4*0.05
28.67*67+32*28.67+573.4*0.05
=28.67*67+32*28.67+573.4/20
=28.67*67+32*28.67+28.67
=28.67*(67+32+1)
=28.67*100
=2867

28.67*67+32*28.67+573.4*0.05
=28.67(67+32)+28.67
=28.67(99+1)
=2867

28.67乘100=2867
再加上573.4*0.05=2869.384

573.4=20*28.67,0.05*20=1.从而原式=28.67*(67+32+1)=2867