解:
(1)125×32×25,
=125×(4×8)×25,
=(125×8)×(4×25),
=1000×100,
=100000;
(2)56×53+56×48-56,
=56×(53+48-1),
=56×100,
=5600;
(3)102×15,
=(100+2)×15,
=100×15+2×15,
=1500+30,
=1530;
(4)1050÷15÷7,
=1050÷(15×7),
=1050÷105,
=10;
(5)12.36-5.64-4.36,
=12.36-(5.64+4.36),
=12.36-10,
=2.36;
(6)1.29+3.7+0.71+6.3,
=(1.29+0.71)+(3.7+6.3),
=2+10,
=12.
分析:(1)32=4×8,然后再根據(jù)乘法交換律和結(jié)合律進(jìn)行簡算;
(2)根據(jù)乘法分配律進(jìn)行簡算;
(3)102=100+2,然后再根據(jù)乘法分配律進(jìn)行簡算;
(4)根據(jù)除法的性質(zhì)進(jìn)行簡算;
(5)根據(jù)減法的性質(zhì)進(jìn)行簡算;
(6)根據(jù)加法交換律和結(jié)合律進(jìn)行簡算.
點(diǎn)評:此題主要考查整數(shù)、小數(shù)的四則混合運(yùn)算的運(yùn)算順序和應(yīng)用運(yùn)算定律進(jìn)行簡便計算.