考點(diǎn):分?jǐn)?shù)的四則混合運(yùn)算,運(yùn)算定律與簡(jiǎn)便運(yùn)算,小數(shù)四則混合運(yùn)算
專題:運(yùn)算順序及法則,運(yùn)算定律及簡(jiǎn)算
分析:(1)(3)(4)(5)根據(jù)乘法分配律簡(jiǎn)便計(jì)算;
(2)先變形為12.5×(8×4)×25,再根據(jù)乘法結(jié)合律簡(jiǎn)便計(jì)算;
(6)先算小括號(hào)里面的除法和加法,再算括號(hào)外面的除法.
解答:
解:(1)13.5×0.75+
×13.5
=13.5×(0.75+0.25)
=13.5×1
=13.5;
(2)12.5×32×25
=12.5×(8×4)×25
=(12.5×8)×(4×25)
=100×100
=10000;
(3)2014×
=(2013+1)×
=2012+
=2012
;
(4)36×(
+
-
)
=36×
+36×
-36×
=9+16-15
=10;
(5)2200÷[56×(
-
)]
=2200÷[35-24]
=2200÷11
=200;
(6)(6.96+19.552÷6.4)÷0.1
=(6.96+3.03)÷0.1
=9.99÷0.1
=99.9.
點(diǎn)評(píng):考查了運(yùn)算定律與簡(jiǎn)便運(yùn)算,四則混合運(yùn)算.注意運(yùn)算順序和運(yùn)算法則,靈活運(yùn)用所學(xué)的運(yùn)算定律簡(jiǎn)便計(jì)算.