Klapptest: Brüche addieren

1)
8
9
+
3
14
=
112
126
+
27
126
=
139
126
2)
4
7
+
3
5
=
20
35
+
21
35
=
41
35
3)
7
9
+
4
5
=
35
45
+
36
45
=
71
45
4)
1
5
+
1
2
=
2
10
+
5
10
=
7
10
5)
7
11
+
1
5
=
35
55
+
11
55
=
46
55
6)
3
11
+
2
3
=
9
33
+
22
33
=
31
33
7)
2
9
+
6
11
=
22
99
+
54
99
=
76
99
8)
3
4
+
5
8
=
6
8
+
5
8
=
11
8
9)
1
4
+
7
11
=
11
44
+
28
44
=
39
44
10)
5
8
+
8
5
=
25
40
+
64
40
=
89
40
11)
7
8
+
3
4
=
7
8
+
6
8
=
13
8
12)
1
5
+
1
3
=
3
15
+
5
15
=
8
15
13)
7
2
+
1
12
=
42
12
+
1
12
=
43
12
14)
1
4
+
1
3
=
3
12
+
4
12
=
7
12
15)
1
2
+
7
2
=
1
2
+
7
2
= 4
16)
7
4
+
1
7
=
49
28
+
4
28
=
53
28
17)
8
3
+
3
7
=
56
21
+
9
21
=
65
21
18)
5
4
+
9
10
=
25
20
+
18
20
=
43
20