①[(9-7)÷2]÷1
②0.52×2+7×0.52
③(1-)×(2+)÷1
④[(4.25-3)×2.4+10÷6]÷0.13
⑤24×(+)÷(6.375-5)
⑥(15÷3-2×1)÷1.
网友回答
解:(1)[(9-7)÷2]÷1
=[];
=;
=;
(2)0.52×2+7×0.52
=()×0.52;
=10×0.52;
=5.2;
(3)(1-)×(2+)÷1
=×();
=×;
=1;
(4)[(4.25-3)×2.4+10÷6]÷0.13
=[(4-3)×2+10]÷;
=[+10×]÷;
=[+];
=×;
=33;
(5)24×(+)÷(6.375-5)
=24×÷();
=34×1;
=34;
(6)(15÷3-2×1)÷1
=();
=(-5)×;
=×;
=.
解析分析:完成本题根据四则混合运算法则计算即可,能简算的要据运算定律简算.
点评:完成本题要认真分析式中数据,特别要注意分数、小数之间的转化.