1-0.6×0.8=
12.5-7.5+2.5=
0.8÷0.8-0.8=
5.5÷14×2.5=
77÷1000+0.23=
(2.04-0.14)÷0.19=
分析:根據(jù)小數(shù)四則混合運(yùn)算的順序,按照小數(shù)四則運(yùn)算的計(jì)算法則脫式計(jì)算.
解答:解:(1)1-0.6×0.8,
=1-0.48,
=0.52;

(2)12.5-7.5+2.5,
=5+2.5,
=7.5;

(3)0.8÷0.8-0.8,
=1-0.8,
=0.2;

(4)5.5÷14×2.5,
=
11
28
×
5
2

=
55
56
;

(5)77÷1000+0.23,
=0.077+0.23,
=0.307;

(6)(2.04-0.14)÷0.19,
=1.9÷0.19,
=10;
點(diǎn)評(píng):此題考查的目的是理解掌握小數(shù)四則混合運(yùn)算的順序以及小數(shù)四則運(yùn)算的計(jì)算法則,并且能夠正確熟練地進(jìn)行計(jì)算.
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