Klapptest: Brüche addieren

1)
1
2
+
4
13
=
13
26
+
8
26
=
21
26
2)
6
7
+
1
9
=
54
63
+
7
63
=
61
63
3)
7
10
+
2
3
=
21
30
+
20
30
=
41
30
4)
1
4
+
3
4
=
1
4
+
3
4
= 1
5)
7
2
+
7
8
=
28
8
+
7
8
=
35
8
6)
7
8
+
9
10
=
35
40
+
36
40
=
71
40
7)
2
3
+
9
2
=
4
6
+
27
6
=
31
6
8)
1
8
+
5
3
=
3
24
+
40
24
=
43
24
9)
5
4
+
3
5
=
25
20
+
12
20
=
37
20
10)
7
3
+
1
12
=
28
12
+
1
12
=
29
12
11)
3
8
+
3
2
=
3
8
+
12
8
=
15
8
12)
7
2
+
3
7
=
49
14
+
6
14
=
55
14
13)
5
6
+
6
7
=
35
42
+
36
42
=
71
42
14)
8
5
+
4
7
=
56
35
+
20
35
=
76
35
15)
6
7
+
1
7
=
6
7
+
1
7
= 1
16)
5
3
+
2
7
=
35
21
+
6
21
=
41
21
17)
1
3
+
4
5
=
5
15
+
12
15
=
17
15
18)
1
12
+
8
5
=
5
60
+
96
60
=
101
60