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连加运算练习
11
+12
+18
=
3
+9
+9
=
1
+17
+5
=
2
+4
+7
=
5
+5
+16
=
5
+4
+2
=
11
+8
+5
=
13
+3
+12
=
11
+12
+14
=
14
+5
+3
=
15
+2
+10
=
1
+3
+14
=
19
+6
+15
=
3
+6
+8
=
2
+18
+18
=
8
+17
+14
=
7
+8
+17
=
18
+8
+15
=
14
+15
+12
=
4
+18
+1
=
11
+18
+18
=
10
+7
+6
=
2
+9
+9
=
2
+14
+15
=
8
+18
+7
=
7
+5
+15
=
15
+1
+14
=
16
+7
+2
=
12
+3
+19
=
6
+15
+11
=
5
+13
+15
=
5
+12
+1
=
14
+13
+14
=
9
+5
+17
=
13
+1
+13
=
12
+15
+7
=
2
+2
+11
=
16
+3
+12
=
8
+5
+18
=
12
+16
+12
=
5
+5
+18
=
12
+5
+13
=
13
+13
+9
=
17
+12
+9
=
6
+6
+10
=
6
+2
+11
=
6
+15
+8
=
15
+19
+9
=
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