Reken de sommen tot 50 uit
Erbijsommen
1.
10
+
40
=
50
40
2.
5
+
30
=
45
35
3.
15
+
25
=
40
25
4.
5
+
15
=
20
15
5.
0
+
35
=
35
40
6.
20
+
25
=
35
45
7.
5
+
45
=
45
50
8.
0
+
35
=
30
35
9.
0
+
45
=
45
30
10.
0
+
45
=
45
30
11.
5
+
25
=
25
30
12.
5
+
30
=
35
25
13.
10
+
40
=
30
50
14.
0
+
50
=
45
50
15.
0
+
50
=
50
35
16.
0
+
40
=
40
25
17.
10
+
30
=
20
40
18.
0
+
15
=
15
5
19.
0
+
30
=
30
25
20.
20
+
30
=
40
50
21.
5
+
15
=
25
20
22.
0
+
50
=
50
40
23.
10
+
15
=
30
25
24.
20
+
30
=
50
40
25.
0
+
25
=
25
15
26.
15
+
30
=
45
35
27.
10
+
20
=
30
35
28.
0
+
45
=
45
25
Reken de sommen tot 50 uit
| ANTWOORDEN
Erbijsommen
1.
10
+
40
=
50
40
2.
5
+
30
=
45
35
3.
15
+
25
=
40
25
4.
5
+
15
=
20
15
5.
0
+
35
=
35
40
6.
20
+
25
=
35
45
7.
5
+
45
=
45
50
8.
0
+
35
=
30
35
9.
0
+
45
=
45
30
10.
0
+
45
=
45
30
11.
5
+
25
=
25
30
12.
5
+
30
=
35
25
13.
10
+
40
=
30
50
14.
0
+
50
=
45
50
15.
0
+
50
=
50
35
16.
0
+
40
=
40
25
17.
10
+
30
=
20
40
18.
0
+
15
=
15
5
19.
0
+
30
=
30
25
20.
20
+
30
=
40
50
21.
5
+
15
=
25
20
22.
0
+
50
=
50
40
23.
10
+
15
=
30
25
24.
20
+
30
=
50
40
25.
0
+
25
=
25
15
26.
15
+
30
=
45
35
27.
10
+
20
=
30
35
28.
0
+
45
=
45
25