题目内容

计算,能简算的要简算.
①56×(
3
7
-
3
8
+
9
14
)
②32×1.25×0.25
③(3618÷18-145)×20
④(156×
4
13
-26)×
8
11

⑤35×(1-
3
7
)÷
5
12

⑥
9
20
÷[
3
4
×(
2
5
+
1
3
)].
①56×(
3
7
-
3
8
+
9
14
),
=56×
3
7
-56×
3
8
+56×
9
14
,
=24-21+36,
=39;
②32×1.25×0.25
=(8×1.25)×(4×0.25),
=10×1,
=10;
③(3618÷18-145)×20,
=(201-145)×20,
=56×20,
=1120;
④(156×
4
13
-26)×
8
11
,
=(48-26)×
8
11
,
=22×
8
11
,
=16;
⑤35×(1-
3
7
)÷
5
12

=35×
4
7
×
12
5
,
=48;
⑥
9
20
÷[
3
4
×(
2
5
+
1
3
)],
=
9
20
÷[
3
4
×
11
15
],
=
9
20
÷
11
20
,
=
9
20
×
20
11
,
=
9
11
.
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