Reken de erafsommen tot 50 uit

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

Erafsommen
1.
35
-
20
=
20
15
2.
35
-
20
=
25
15
3.
45
-
0
=
30
45
4.
35
-
0
=
25
35
5.
30
-
0
=
25
30
6.
50
-
25
=
20
25
7.
45
-
30
=
15
20
8.
10
-
0
=
10
5
9.
50
-
45
=
5
20
10.
35
-
0
=
35
25
11.
40
-
0
=
40
25
12.
25
-
20
=
10
5
13.
35
-
35
=
0
5
14.
10
-
5
=
5
25
15.
35
-
0
=
35
45
16.
30
-
20
=
15
10
17.
5
-
5
=
10
0
18.
15
-
15
=
0
10
19.
45
-
35
=
10
0
20.
35
-
5
=
25
30
21.
20
-
15
=
10
5
22.
40
-
25
=
15
20
23.
45
-
10
=
35
30
24.
10
-
10
=
0
20
25.
50
-
50
=
0
10
26.
35
-
0
=
40
35
27.
30
-
15
=
15
20
28.
35
-
10
=
25
20
© JuniorEinstein.nl
Online oefenen  |   Educatieve boeken  |   Werkbladen  |   Educatieve materialen