22.05*82-20.05*4.5-20.05*8简便方法怎么算?

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22.05*82-20.05*4.5-20.05*8简便方法怎么算?

22.05*82-20.05*4.5-20.05*8简便方法怎么算?
22.05*82-20.05*4.5-20.05*8简便方法怎么算?

22.05*82-20.05*4.5-20.05*8简便方法怎么算?
22.05*82-20.05*4.5-20.05*8
=22.05(82-4.5-8)+2×82
=22.05×69.5+164
=1393..475+164
=1557.479