计算下面各题(能简算的要简算):
2506-10517÷13+14×106
[0.8+0.75×(0.65-0.25)]÷0.01
(4-1)÷(+)×
1-2÷(3×)÷.0.75+1.32.
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解:①2506-10517÷13+14×106,
=2506-809+1484,
=1697+1484,
=3181;
②[0.8+0.75×(0.65-0.25)]÷0.01,
=[0.8+0.75×0.4]÷0.01,
=[0.8+0.3]÷0.01,
=1.1÷0.01,
=110;
③(4-1)÷(+)×,
=(3-1)÷(+)×,
=÷×,
=××,
=1;
④1-2÷(3×)÷.0.75+1.32,
=1-2÷2÷.0.75+1.32,
=1-1÷.0.75+1.32,
=1-1+1.32,
=1.32.
解析分析:根据四则混合运算的运算顺序和计算法则进行计算即可,注意运算定律的使用.
点评:细心计算,灵活使用运算定律进行简算.