计算下面各题(能简算的要简算):
(-)÷101×821.56÷0.3×0.16125×0.32×25.
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解:(1)(-)÷,
=÷,
=;
(2)101×82,
=(100+1)×82,
=100×82+1×82,
=8200+82,
=8282;
(3)1.56÷0.3×0.16,
=5.2×0.16,
=0.832;
(4)125×0.32×25,
=125×0.8×0.4×25,
=(125×0.8)×(0.4×25),
=100×10,
=1000.
解析分析:(1)先算小括号里面的减法,再算括号外的除法;
(2)把101分成100+1,再运用乘法分配律简算;
(3)按照从左到右的顺序计算;
(4)先把0.32分解成0.8×0.4,再运用乘法结合律简算.
点评:本题考查了四则混合运算,注意运算顺序和运算法则,灵活运用所学的运算定律进行简便计算.