题目内容

①75+225÷(20-5)②(46-32)×(7+25)
③(124-85)×12÷13④235-135÷5.
①75+225÷(20-5),
=75+225÷15,
=75+15,
=90;

②(46-32)×(7+25),
=14×32,
=448;

③(124-85)×12÷13,
=39×12÷13,
=468÷13,
=36;

④235-135÷5,
=235-27,
=208.
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