分析:本題雖為直接寫(xiě)得數(shù),但各算式數(shù)據(jù)較為復(fù)雜,因此計(jì)算時(shí)要注意分析算式中的數(shù)據(jù),盡量用簡(jiǎn)便方法進(jìn)行計(jì)算.
算式(1)可用湊整法計(jì)算,原式=(2000-3)+(20000-2)+(2000-1)+6;
算式(3)根據(jù)乘法分配律將101拆分進(jìn)行簡(jiǎn)便計(jì)算,原式=41×(100+1);
算式(4)可根據(jù)加法交換律進(jìn)行簡(jiǎn)便計(jì)算;
算式(6)(8)可根據(jù)乘法分配律進(jìn)行簡(jiǎn)便計(jì)算;
算式(7)可根據(jù)乘法交換律進(jìn)行簡(jiǎn)便計(jì)算.
解答:解:(1)1997+19998+1999+6=24000,
(2)3.6÷0.36=10,
(3)41×101=4141,
(4)
-
+
=
,
(5)0.2
2=0.04,
(6)(50+
)×
=36,
(7)
×10÷
×10=100,
(8)0.75×
+
×
=
;
故答案為:(1)24000,(2)10,(3)4141,(4)
,(5)0.04,(6)36,(7)100,(8)
.
點(diǎn)評(píng):完成本題的關(guān)鍵是在分析算式中數(shù)據(jù)的基礎(chǔ)上運(yùn)用簡(jiǎn)便方法計(jì)算各題.