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17.3-0.88-6.12                     8×96×125
23×102                             123×43-43×23
分析:①17.3-0.88-6.12,运用减法的运算性质简算;                 
②8×96×125,运用乘法交换律和结合律简算;
③23×102,运用乘法分配律简算;                       
④123×43-43×23,运用乘法分配律简算.
解答:解:①17.3-0.88-6.12 
=17.3-(0.88+6.12)
=17.3-7
=10.3;
                   
②8×96×125
=96×(8×125)
=96×1000
=96000;

③23×102   
=23×100+23×2
=2300+46
=2346;
                         
④123×43-43×23
=(123-23)×43
=100×43
=4300.
点评:此题考查的目的是理解掌握加、减法的运算性质和乘法的运算定律,并且能够灵活运用这些运算性质和运算定律进行简便计算.
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