怎样简便就怎样计算.①4×+4÷????????????????????②5×××?????????????????③41×101④8.5-(5.6+4.8)÷1.3

发布时间:2020-07-30 17:31:19

怎样简便就怎样计算.
①4×+4÷????????????????????②5×××?????????????????③41×101
④8.5-(5.6+4.8)÷1.3??????????⑤12×(+-)??????????⑥-(-)

网友回答

解:①4×+4÷,
=()×4,
=1×4,
=4;

②5×××,
=(5×)×(),
=4×,
=;

③41×101,
=41×100+41×1,
=4100+41,
=4141;

④8.5-(5.6+4.8)÷1.3,
=8.5-10.4÷1.3,
=8.5-8,
=0.5;

⑤12×(+-),
=12×+12×-12×,
=3+2-4,
=1;

⑥-(-),
=,
=-,
=.
解析分析:(1)(3)(5)运用乘法分配律解答,(2)运用乘法交换律和结合律解答,(4)依据四则运算顺序解答,(6)运用减法性质解答.

点评:(1)正确运用简便方法解决问题,(2)依据四则运算顺序进行计算是本题考查知识点.
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