(55+59+52+60+56+54)/6能简便就简便的脱式计算
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![(55+59+52+60+56+54)/6能简便就简便的脱式计算](/uploads/image/z/101089-1-9.jpg?t=%2855%2B59%2B52%2B60%2B56%2B54%29%2F6%E8%83%BD%E7%AE%80%E4%BE%BF%E5%B0%B1%E7%AE%80%E4%BE%BF%E7%9A%84%E8%84%B1%E5%BC%8F%E8%AE%A1%E7%AE%97)
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(55+59+52+60+56+54)/6能简便就简便的脱式计算
(55+59+52+60+56+54)/6能简便就简便的脱式计算
(55+59+52+60+56+54)/6能简便就简便的脱式计算
把59=55+4
{(55+55)+(4+52+60)+(56+54)}/6
={110+116+110}/6
=336/6
=56