473+59+27+198x99简便计算怎样算
473+59+27+198x99简便计算怎样算
=473+27+59+198x(100-1)
=500+59+198x100-198
=559+19800-200+2
=20359-200+2
=20159+2
=20161
=473+27+59+198x(100-1)
=500+59+198x100-198
=559+19800-200+2
=20359-200+2
=20159+2
=20161
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