题目内容

计算,能简算的要简算.
43×
9
42
4
7
×
5
9
+
4
9
÷
7
4
2-
6
13
÷
9
26
-
2
3
8
9
+
4
7
÷
6
7
5
14
÷
4
21
×0.64
(0.75-
3
16
)×(
2
9
+
1
3
)
(1)43×
9
42
,
=(42+1)×
9
42
,
=42×
9
42
+1×
9
42
,
=9+
9
42
,
=9
3
14
,

(2)
4
7
×
5
9
+
4
9
÷
7
4
,
=
4
7
×
5
9
+
4
9
×
4
7
,
=
4
7
×(
5
9
+
4
9
),
=
4
7
×1,
=
4
7
;

(3)2-
6
13
÷
9
26
-
2
3
,
=2-
6
13
×
26
9
-
2
3
,
=2-
4
3
-
2
3
,
=2-(
4
3
+
2
3
),
=2-2,
=0;

(4)
8
9
+
4
7
÷
6
7
,
=
8
9
+
4
7
×
7
6
,
=
8
9
+
2
3
,
=
14
9
,
=1
5
9
;

(5)
5
14
÷
4
21
×0.64,
=
5
14
×
21
4
×0.64,
=1.2;

(6)(0.75-
3
16
)×(
2
9
+
1
3
),
=
9
16
×
5
9
,
=
5
16
.
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