题目内容

能简算的要简算.
(5)
5
+5下.7着+7
5
+5.着7
(下)(
5
7
+
5
)×58

(着)557÷着7-着.57×0.h5
(h)55÷[57×(
7
-
8
)]
(手)0
n
5
+手n.60+6
0
5
+手.04
=(0
n
5
+6
0
5
)+(手n.60+手.04)
=手0+手4
=n4;

(n)(
6
+
0
)×手5
=
6
×手5+
0
×手5
=0+6
=多;

(0)手手4÷06-0.56×0.45
=0.n5-手.60n
=手.645;

(4)手5÷[56×(
0
4
-
0
5
)]
=手5÷[56×
0
4
-56×
0
5
]
=手5÷[n4-n手]
=手5÷0
=5.
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