22.2*18.4+44.4*11.2-88.8*0.2简便计算,*是乘号的意思.

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22.2*18.4+44.4*11.2-88.8*0.2简便计算,*是乘号的意思.
22.2*18.4+44.4*11.2-88.8*0.2
简便计算,*是乘号的意思.

22.2*18.4+44.4*11.2-88.8*0.2简便计算,*是乘号的意思.
22.2*18.4+44.4*11.2-88.8*0.2
=22.2*18.4+22.2*22.4-22.2*0.8
=22.2*(18.4+22.4-0.8)
=22.2*40
=888

22.2*18.4+44*11.2-88.8*0.2
=44.4*9.2+44.4*11.2-44.4*0.4
44.4*(9.2+11.2-0.4)
=44.4*20
=88