题目内容

下列各题,你认为怎样算简便就怎样算
8.54-1.26-4.74
4
5
-(
2
7
-
1
5
)÷
1
4
5
36
÷[(
1
2
-
1
6
)×
5
9
]
8
17
÷23+
1
23
×
9
17
(1)8.54-1.26-4.74
=8.54-(1.26+4.74),
=8.54-6,
=2.54;

(2)
4
5
-(
2
7
-
1
5
)÷
1
4

=
4
5
-
3
35
×4,
=
4
5
-
12
35

=
16
35


(3)
5
36
÷[(
1
2
-
1
6
)×
5
9
]
=
5
36
÷[
1
3
×
5
9
],
=
5
36
÷
5
27

=
3
4


(4)
8
17
÷23+
1
23
×
9
17

=
8
17
×
1
23
+
1
23
×
9
17

=(
8
17
+
9
17
)×
1
23

=1×
1
23

=
1
23
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