爱上海后花园

计算下面各题,能简算的请用简便方法计算.8.38+9.43+6.62     5.86-1.77+2.54 47.2+8.6-7.2       28.6-3.8-14.6-6.2 8-2.6-1.77         7.4+0.93-4.36 17.34-(9.8+6.34) 0.93+5.45+7.07+4.55.

1838943662=838662943=15943=24932586177254=586254177=84177=66334728672=4727286=4086=48642863814662=286146...

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