Klapptest: Brüche addieren

1)
3
4
+
1
2
=
3
4
+
2
4
=
5
4
2)
6
7
+
7
11
=
66
77
+
49
77
=
115
77
3)
6
7
+
3
11
=
66
77
+
21
77
=
87
77
4)
1
9
+
1
14
=
14
126
+
9
126
=
23
126
5)
9
10
+
8
11
=
99
110
+
80
110
=
179
110
6)
2
3
+
8
11
=
22
33
+
24
33
=
46
33
7)
8
7
+
9
5
=
40
35
+
63
35
=
103
35
8)
2
5
+
1
11
=
22
55
+
5
55
=
27
55
9)
8
7
+
9
8
=
64
56
+
63
56
=
127
56
10)
7
12
+
8
3
=
7
12
+
32
12
=
13
4
11)
1
2
+
7
9
=
9
18
+
14
18
=
23
18
12)
5
3
+
7
8
=
40
24
+
21
24
=
61
24
13)
9
8
+
3
7
=
63
56
+
24
56
=
87
56
14)
9
10
+
2
3
=
27
30
+
20
30
=
47
30
15)
9
2
+
2
3
=
27
6
+
4
6
=
31
6
16)
1
4
+
7
8
=
2
8
+
7
8
=
9
8
17)
8
9
+
4
11
=
88
99
+
36
99
=
124
99
18)
7
11
+
5
6
=
42
66
+
55
66
=
97
66