脱式计算,能简算的要简算. 0.7×101-0.70.125×4.7×812.5-1.68-2.32567÷20÷5.
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解:(1)0.7×101-0.7,
=0.7×(101-1),
=0.7×100,
=70;
(2)0.125×4.7×8,
=(0.125×8)×4.7,
=1×4.7,
=4.7;
(3)12.5-1.68-2.32,
=12.5-(1.68+2.32),
=12.5-4,
=8.5;
(4)567÷20÷5,
=567÷(20×5),
=567÷100,
=5.67.
解析分析:(1)运用乘法分配律简算;
(2)运用乘法交换律与结合律简算;
(3)运用减法的性质简算;
(4)运用除法的性质简算.
点评:完成本题,要注意分析式中数据,运用合适的简便方法计算.