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能简便的就要简便计算.613+1739+713+22394-1617-117914+47-914+47613-(34-713)1419-(13+151)3.95÷0.25÷4.

题目详情
能简便的就要简便计算.
6
13
+
17
39
+
7
13
+
22
39

4-
16
17
-
1
17
9
14
+
4
7
-
9
14
+
4
7
6
13
-(
3
4
-
7
13
)        
 
14
19
-(
1
3
+
1
51
)       
3.95÷0.25÷4.
▼优质解答
答案和解析
(1)
6
13
+
17
39
+
7
13
+
22
39

=(
6
13
+
7
13
)+(
22
39
+
17
39

=1+1
=2

(2)4-
16
17
-
1
17

=4-(
16
17
+
1
17

=4-1
=3

(3)
9
14
+
4
7
-
9
14
+
4
7

=
9
14
-
9
14
+
4
7
+
4
7

=
8
7


(4)
6
13
-(
3
4
-
7
13
)  
=
6
13
-
3
4
+
7
13

=1-
3
4

=
1
4


(5)
14
19
-(
1
3
+
1
51

=
14
19
-
6
17

=
124
323


(6)3.95÷0.25÷4
=3.95÷(0.25×4)
=3.95÷1
=3.95.