(1)9.6×0.8×0.54     
(2)0.24÷1.2÷0.05   
(3)0.72÷0.9×3.5    
(4)1.4×4.2+0.8÷0.5 
(5)9.74÷[(5-3.2)÷3.6]
(6)4.8÷[(5.6-3.7)÷7.6]
(7)9.6÷(2.4+1.6×0.5)
分析:本題根據(jù)四則混合運(yùn)算的運(yùn)算順序計(jì)算即可:(1)(2)(3)按從左到右的順序計(jì)算即可.
(4)(5)(6)(7)先算乘除,再算加減,有括號(hào)的要先算括號(hào)里面的.
解答:解:(1)9.6×0.8×0.54
=7.68×0.54,
=4.1472;

(2)0.24÷1.2÷0.05
=0.2÷0.05,
=4;

(3)0.72÷0.9×3.5
=0.8×3.5,
=2.8;

(4)1.4×4.2+0.8÷0.5
=5.88+1.6,
=7.48;

(5)9.74÷[(5-3.2)÷3.6]
=9.74÷[1.8÷3.6],
=9.74÷0.5,
=19.48;

(6)4.8÷[(5.6-3.7)÷7.6]
=4.8÷[1.9÷7.6],
=4.8÷0.25,
=19.2;

(7)9.6÷(2.4+1.6×0.5)
=9.6÷(2.4+0.8),
=9.6÷3.2,
=3.
點(diǎn)評(píng):當(dāng)算式中同時(shí)含有中括號(hào)與小括號(hào)時(shí),要先算小括號(hào)里面的,再算中括號(hào)里面的.
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