题目内容

计算下列各题.(能简算的要简算)
7÷
7
9
-
7
9
÷7
15÷
8
9
+15×
7
8
3
22
÷[
5
4
÷(
14
3
-
1
2
)]
3-
5
18
×
27
40
-
13
16
8
15
÷[
5
32
×(
9
10
+
1
6
)]
1
26
×(7×26)
①7÷
7
9
-
7
9
÷7,
=7×
9
7
-
7
9
×
1
7
,
=9-
1
9
,
=8
8
9
;

②15÷
8
9
+15×
7
8
,
=15×
9
8
+15×
7
8
,
=(
9
8
+
7
8
)×15,
=2×15,
=30;

③
3
22
÷[
5
4
÷(
14
3
-
1
2
)],
=
3
22
÷[
5
4
÷
25
6
],
=
3
22
÷
3
10
,
=
5
11
;

④3-
5
18
×
27
40
-
13
16
,
=3-
3
16
-
13
16
,
=3-(
3
16
+
13
16
),
=3-1,
=2;

⑤
8
15
÷[
5
32
×(
9
10
+
1
6
)],
=
8
15
÷[
5
32
×
32
30
],
=
8
15
×6,
=
16
5
;

⑥
1
26
×(7×26),
=
1
26
×26×7,
=1×7,
=7.
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