题目内容
计算下列各题,能简算的要简算.
2.56÷0.04÷0.5 | 1.92÷0.12-2.7 | 37.3-1.5÷0.24 | 7.52×0.65÷0.752. |
解:(1)2.56÷0.04÷0.5,
=2.56÷(0.04×0.5),
=2.56÷0.02,
=128;
(2)1.92÷0.12-2.7,
=16-2.7,
=13.3;
(3)37.3-1.5÷0.24,
=37.3-6.25,
=31.05;
(4)7.52×0.65÷0.752,
=7.52÷0.752×0.65,
=10×0.65,
=6.5.
分析:(1)运用除法的性质简算;
(2)(3)先算除法,再算减法;
(4)调整一下运算顺序,即7.52÷0.752×0.65,计算即可.
点评:此题考查了小数的四则混合运算,注意运算顺序和运算法则,灵活运用所学的运算律简便计算.
=2.56÷(0.04×0.5),
=2.56÷0.02,
=128;
(2)1.92÷0.12-2.7,
=16-2.7,
=13.3;
(3)37.3-1.5÷0.24,
=37.3-6.25,
=31.05;
(4)7.52×0.65÷0.752,
=7.52÷0.752×0.65,
=10×0.65,
=6.5.
分析:(1)运用除法的性质简算;
(2)(3)先算除法,再算减法;
(4)调整一下运算顺序,即7.52÷0.752×0.65,计算即可.
点评:此题考查了小数的四则混合运算,注意运算顺序和运算法则,灵活运用所学的运算律简便计算.
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