题目内容
计算:
(1)7.2×14.3÷0.8÷1.1×0.01=
(2)1.25×2.64+12.5×0.726+0.125=
(1)7.2×14.3÷0.8÷1.1×0.01=
1.17
1.17
;(2)1.25×2.64+12.5×0.726+0.125=
12.5
12.5
.分析:(1)通过观察,此题可调整一下运算顺序,进行简算,即7.2÷0.8×(14.3÷1.1)×0.01,简算即可;
(2)根据数字特点,原式变为0.125×26.4+0.125×72.6+0.125,运用乘法分配律简算.
(2)根据数字特点,原式变为0.125×26.4+0.125×72.6+0.125,运用乘法分配律简算.
解答:解:(1)7.2×14.3÷0.8÷1.1×0.01,
=7.2÷0.8×(14.3÷1.1)×0.01,
=9×13×0.01,
=1.17;
(2)1.25×2.64+12.5×0.726+0.125,
=0.125×26.4+0.125×72.6+0.125,
=0.125×(26.4+72.6+1),
=0.125×100,
=12.5.
故答案为:1.17,12.5.
=7.2÷0.8×(14.3÷1.1)×0.01,
=9×13×0.01,
=1.17;
(2)1.25×2.64+12.5×0.726+0.125,
=0.125×26.4+0.125×72.6+0.125,
=0.125×(26.4+72.6+1),
=0.125×100,
=12.5.
故答案为:1.17,12.5.
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.
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