解:(1)2.5×1.25×32,
=2.5×1.25×8×4,
=(2.5×4)×(1.25×8),
=10×10,
=100;
(2)10.36-3.53-6.47,
=10.36-(3.53+6.47),
=10.36-10,
=0.36;
(3)2.1+2
+1.19+3
,
=(2
+3
)+(2.1+1.19),
=6+3.29,
=9.29;
(4)35×(
),
=35×
+35×
,
=21+10,
=31;
(5)24×[(
)÷
],
=24×[(
)×
],
=24×[
],
=24×
,
=8;
(6)
,
=
÷[
×
],
=
÷[
],
=
÷[
],
=
,
=
,
=2
;
分析:算式(1)中可將32拆分為8×4,然后再據(jù)乘法交換律及結(jié)合律進(jìn)行計算;
算式(2)可根據(jù)一個數(shù)連續(xù)減去兩個數(shù),可以用這個數(shù)減去這兩個數(shù)的和,使計算更加簡便;
算式(3)可根據(jù)加法的交換律和結(jié)合律計算更加簡便;
算式(4)可根據(jù)乘法分配律進(jìn)行計算,使計算更加簡便;
算式(5)、(6)根據(jù)四則混合運算的運算順序計算即可.
點評:本題考查了運算定律,運算性質(zhì),四則混合運算等內(nèi)容的掌握運用情況及靈活運用所學(xué)知識的運用情況.