分析:(1)先把32分解成4×8,然后運(yùn)用除法的性質(zhì)簡(jiǎn)算;
(2)把166分解成167-1,再運(yùn)用乘法分配律簡(jiǎn)算;
(3)先把分?jǐn)?shù)化成小數(shù),再根據(jù)被除數(shù)和除法相等,商是1,直接求解;
(4)先把1999分解成2000-1,再兩次運(yùn)用乘法分配律簡(jiǎn)算.
解答:解:(1)1000÷32÷0.25÷1.25,
=1000÷4÷8÷0.25÷1.25,
=1000÷(4×0.25)÷(8×1.25),
=1000÷1÷10,
=100;
(2)166×
,
=(167-1)×
,
=167×
-1×
,
=166-
,
=165
;
(3)2
×3
×5
÷(3.35×5.625×2.12),
=(2.12×3.35×5.625)÷(3.35×5.625×2.12),
=1;
(4)94×1999-93×2000,
=94×(2000-1)-93×2000,
=94×2000-94×1-93×2000,
=94×2000-93×2000-94×1,
=(94-94)×2000-94×1,
=1×2000-94×1,
=2000-94,
=1906.
點(diǎn)評(píng):此題主要考查分?jǐn)?shù)、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(jiǎn)便計(jì)算.