82.52-(18.45+25.52)能巧算吗’
82.52-(18.45+25.52)能巧算吗’
怎么简便运算??
巧算=简便
82.52-(18.45+25.52)
=82.52-25.52-18.45
=57-18.45
=38.55
能啊 把括号去掉
82.52-(18.45+25.52)
=82.52-18.45-25.52
=82.52-25.52-18.45
=57-18.45
=38.55
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82.52-(18.45+25.52)能巧算吗’
怎么简便运算??
巧算=简便
82.52-(18.45+25.52)
=82.52-25.52-18.45
=57-18.45
=38.55
能啊 把括号去掉
82.52-(18.45+25.52)
=82.52-18.45-25.52
=82.52-25.52-18.45
=57-18.45
=38.55