Oefen de erbijsommen tot 50

Erbijsommen
1.
5
+
30
=
2.
20
+
25
=
3.
0
+
40
=
4.
0
+
40
=
5.
0
+
45
=
6.
10
+
35
=
7.
0
+
40
=
8.
10
+
30
=
9.
0
+
30
=
10.
10
+
35
=
11.
0
+
50
=
12.
10
+
10
=
13.
0
+
45
=
14.
0
+
40
=
15.
0
+
40
=
16.
0
+
50
=
17.
20
+
20
=
18.
0
+
40
=
19.
10
+
20
=
20.
20
+
30
=
21.
5
+
15
=
22.
10
+
35
=
23.
0
+
45
=
24.
0
+
45
=
25.
15
+
25
=
26.
10
+
40
=
27.
20
+
25
=
28.
0
+
10
=
29.
15
+
20
=
30.
0
+
45
=
31.
0
+
5
=
32.
5
+
40
=
33.
5
+
45
=
34.
20
+
20
=
35.
5
+
40
=
36.
5
+
15
=
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Oefen de erbijsommen tot 50
| ANTWOORDEN

Erbijsommen
1.
5
+
30
=
35
2.
20
+
25
=
45
3.
0
+
40
=
40
4.
0
+
40
=
40
5.
0
+
45
=
45
6.
10
+
35
=
45
7.
0
+
40
=
40
8.
10
+
30
=
40
9.
0
+
30
=
30
10.
10
+
35
=
45
11.
0
+
50
=
50
12.
10
+
10
=
20
13.
0
+
45
=
45
14.
0
+
40
=
40
15.
0
+
40
=
40
16.
0
+
50
=
50
17.
20
+
20
=
40
18.
0
+
40
=
40
19.
10
+
20
=
30
20.
20
+
30
=
50
21.
5
+
15
=
20
22.
10
+
35
=
45
23.
0
+
45
=
45
24.
0
+
45
=
45
25.
15
+
25
=
40
26.
10
+
40
=
50
27.
20
+
25
=
45
28.
0
+
10
=
10
29.
15
+
20
=
35
30.
0
+
45
=
45
31.
0
+
5
=
5
32.
5
+
40
=
45
33.
5
+
45
=
50
34.
20
+
20
=
40
35.
5
+
40
=
45
36.
5
+
15
=
20
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Online oefenen  |   Educatieve boeken  |   Werkbladen  |   Educatieve materialen