Klapptest: Brüche addieren

1)
4
11
+
5
6
=
24
66
+
55
66
=
79
66
2)
4
5
+
7
9
=
36
45
+
35
45
=
71
45
3)
5
11
+
8
5
=
25
55
+
88
55
=
113
55
4)
1
2
+
3
2
=
1
2
+
3
2
= 2
5)
7
3
+
7
9
=
21
9
+
7
9
=
28
9
6)
2
3
+
5
13
=
26
39
+
15
39
=
41
39
7)
6
7
+
8
13
=
78
91
+
56
91
=
134
91
8)
5
3
+
3
2
=
10
6
+
9
6
=
19
6
9)
7
3
+
8
3
=
7
3
+
8
3
= 5
10)
1
4
+
2
7
=
7
28
+
8
28
=
15
28
11)
7
2
+
2
9
=
63
18
+
4
18
=
67
18
12)
8
9
+
8
3
=
8
9
+
24
9
=
32
9
13)
6
7
+
1
14
=
12
14
+
1
14
=
13
14
14)
5
7
+
5
6
=
30
42
+
35
42
=
65
42
15)
4
3
+
2
11
=
44
33
+
6
33
=
50
33
16)
3
4
+
5
14
=
21
28
+
10
28
=
31
28
17)
3
8
+
1
7
=
21
56
+
8
56
=
29
56
18)
1
2
+
9
2
=
1
2
+
9
2
= 5