解:(1)9

÷[3.2×(1-
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)+3

],
=9

÷[3.2×

+3

],
=9

÷[1.2+3

],
=9

÷4.8,
=2;
(2)
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:2x=1

:2
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,
2x×
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=
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,
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,
x=
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;
(3)29×

+
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×114,
=17×

+
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×114,
=
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(17+114),
=
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,
=29;
(4)999

+99

+9

,
=(999+99+9)+(
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
),
=1107+2

,
=1109

;
(5)0.625×7.3×1

-1

+3.7-2

=

+3.7-(1

+2

),
=7.3+3.7-4,
=7;
(6)1

+2

+3

+4

+5

+6

,
=(1+2+3+4+5+6)+(
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+
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+
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+

+

+

),
=21+
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,
=21

.
(7)(
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-
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+

)÷
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,
=
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×
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-

×
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+

×
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,
=3+
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-

,
=2

.
分析:(1)根據(jù)四則運算的計算順序進行計算,
(2)先根據(jù)比例的基本性質(zhì),把原式轉(zhuǎn)化為2x×

=

,再根據(jù)等式的性質(zhì),在方程兩邊同時乘

求解,
(3)根據(jù)乘法分配律進行計算,
(4)根據(jù)加法交換律和加法結(jié)合律進行計算,
(5)根據(jù)加法交換律和加法結(jié)合律進行計算,
(6)根據(jù)加法交換律師和加法結(jié)合律進行計算,
(7)根據(jù)乘法分配律進行計算.
點評:本題主要考查了學(xué)生四則運算的計算能力,以及在計算中靈活運用計算方法的計算能力.