分析:先算小括號內(nèi)的除法,把
變?yōu)?+
,原式變?yōu)?0÷[2+
-(2+
)],中括號內(nèi)運(yùn)用減法的性質(zhì)簡算,最后算括號外的除法.
解答:解:10÷[
-(
÷
+
)],
=10÷[
-(
×
+
)],
=10÷[2+
-(2+
)],
=10÷[2+
-2-
],
=10÷[
-
],
=10×
,
=37
.
點(diǎn)評:考查了分?jǐn)?shù)的四則混合運(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)算定律簡便計(jì)算.
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來源:
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| 1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
| 51 |
52 |
53 |
54 |
55 |
56 |
57 |
58 |
59 |
60 |
| 61 |
62 |
63 |
64 |
65 |
66 |
67 |
68 |
69 |
70 |
| 71 |
72 |
73 |
74 |
75 |
76 |
77 |
78 |
79 |
80 |
| 81 |
82 |
83 |
84 |
85 |
86 |
87 |
88 |
89 |
90 |
| 91 |
92 |
93 |
94 |
95 |
96 |
97 |
98 |
99 |
100 |
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.
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