(1)1325+(56-1325)-16(2)1320-(215+13)(3)97+18+57+38(4)2-23+1315-13.-数学

题目简介

(1)1325+(56-1325)-16(2)1320-(215+13)(3)97+18+57+38(4)2-23+1315-13.-数学

题目详情

(1)
13
25
+(
5
6
-
13
25
)-
1
6

(2)
13
20
-(
2
15
+
1
3
)

(3)
9
7
+
1
8
+
5
7
+
3
8

(4)2-
2
3
+
13
15
-
1
3
题型:解答题难度:中档来源:不详

答案

(1)class="stub"13
25
+(class="stub"5
6
-class="stub"13
25
)-class="stub"1
6

=class="stub"13
25
+class="stub"5
6
-class="stub"13
25
-class="stub"1
6

=(class="stub"13
25
-class="stub"13
25
)+(class="stub"5
6
-class="stub"1
6
),
=0+class="stub"4
6

=class="stub"2
3


(2)class="stub"13
20
-(class="stub"2
15
+class="stub"1
3
)

=class="stub"13
20
-class="stub"21
45

=class="stub"11
60


(3)class="stub"9
7
+class="stub"1
8
+class="stub"5
7
+class="stub"3
8

=(class="stub"9
7
+class="stub"5
7
)+(class="stub"1
8
+class="stub"3
8
),
=2+class="stub"1
2

=2class="stub"1
2


(4)2-class="stub"2
3
+class="stub"13
15
-class="stub"1
3

=2-(class="stub"2
3
+class="stub"1
3
)+class="stub"13
15

=2-1+class="stub"13
15

=1+class="stub"13
15

=1class="stub"13
15

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