下面每题,怎样算简便就怎样算36.8-6.8÷0.50.125×32×0.251.25×8.873÷4+2.7×0.253.75÷[0.3×(1.34-0.84)]

发布时间:2020-07-30 11:22:51

下面每题,怎样算简便就怎样算 36.8-6.8÷0.50.125×32×0.251.25×8.873÷4+2.7×0.253.75÷[0.3×(1.34-0.84)].

网友回答

解:①36.8-6.8÷0.5,
=36.8-13.6,
=23.2;

②0.125×32×0.25,
=(0.125×8)×(4×0.25),
=1×1,
=1;

③1.25×8.8,
=1.25×(8+0.8),
=1.25×8+1.25×0.8,
=10+1,
=11;

④73÷4+2.7×0.25,
=73×+2.7×0.25,
=(73+2.7)×0.25,
=75.7×0.25,
=18.925;

⑤3.75÷[0.3×(1.34-0.84)],
=3.75÷[0.3×0.5],
=3.75÷0.15,
=25.

解析分析:①先算除法,再算减法;②将32写成4与8的乘积,再运用乘法结合律进行计算;③将8.8写成8与0.8的和,再运用乘法分配律计算;④将除以4转换成乘0.25,再运用乘法分配律计算;⑤先计算小括号里的,再计算中括号里的,最后计算括号外面的.

点评:解决本题的关键是细心分析数据,选择适合的方法解答.
以上问题属网友观点,不代表本站立场,仅供参考!