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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