题目内容

计算(能简算的要简算)
1
2
-
1
7
×
7
10
+
5
6
(
2
3
-
5
9
×
3
8
)×
16
7
7
18
×
1
4
+
3
4
×
7
18
45×
45
46
24×(
3
4
-
1
3
+
1
6
)
2-(
1
2
+
1
25
)-
23
50
.
(1)
1
2
-
1
7
×
7
10
+
5
6
,
=
1
2
-
1
10
+
5
6
,
=
2
5
+
5
6
,
=
37
30
;

(2)(
2
3
-
5
9
×
3
8
)×
16
7
,
=(
2
3
-
5
24
)×
16
7
,
=
11
24
×
16
7
,
=
22
21
;

(3)
7
18
×
1
4
+
3
4
×
7
18
,
=(
1
4
+
3
4
)×
7
18
,
=1×
7
18
,
=
7
18
;

(4)45×
45
46
,
=(46-1)×
45
46
,
=46×
45
46
-1×
45
46
,
=45-
45
46
,
=44
1
46
;

(5)24×(
3
4
-
1
3
+
1
6
),
=24×
3
4
-24×
1
3
+24×
1
6
,
=18-8+4,
=14;

(6)2-(
1
2
+
1
25
)-
23
50
,
=2-
27
50
-
23
50
,
=2-(
27
50
+
23
50
),
=2-1,
=1.
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