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能简便的就简便.67.5×0.52+3.25×5.236×(56+79)14317-6.46-3.54(119+217)×19×17120×19+120837-(537-611)

题目详情
能简便的就简便.
67.5×0.52+3.25×5.2    36×(
5
6
+
7
9
)   
14
3
17
-6.46-3.54
1
19
+
2
17
)×19×17    
1
20
×19+
1
20
       
8
3
7
-(5
3
7
-
6
11
▼优质解答
答案和解析
(1)67.5×0.52+3.25×5.2
=6.75×5.2+3.25×5.2
=(6.75+3.25)×5.2
=10×5.2
=52;

(2)36×(
5
6
+
7
9

=36×
5
6
+36×
7
9

=30+28
=58;

(3)14
3
17
-6.46-3.54
=14
3
17
-(6.46+3.54)
=14
3
17
-10
=4
3
17


(4)(
1
19
+
2
17
)×19×17
=
1
19
×19×17+
2
17
×19×17
=17+38
=55;

(5)
1
20
×19+
1
20

=
1
20
×(19+1)
=
1
20
×20
=1;

(6)8
3
7
-(5
3
7
-
6
11

=8
3
7
-5
3
7
+
6
11

=3+
6
11

=3
6
11