Oefen de erafsommen tot 50

Erafsommen
1.
45
-
0
=
35
25
40
45
2.
40
-
35
=
25
5
15
10
3.
35
-
25
=
10
15
20
5
4.
20
-
0
=
30
25
20
10
5.
20
-
5
=
5
10
15
20
6.
10
-
0
=
15
10
0
5
7.
50
-
15
=
30
35
25
45
8.
40
-
10
=
35
25
20
30
9.
15
-
5
=
5
15
10
0
10.
20
-
5
=
15
25
5
10
11.
30
-
10
=
25
15
20
30
12.
45
-
0
=
35
30
45
25
13.
15
-
15
=
20
0
10
15
14.
45
-
10
=
25
45
40
35
15.
40
-
5
=
35
40
45
25
16.
25
-
0
=
30
20
25
35
17.
30
-
10
=
20
25
10
30
18.
20
-
10
=
5
20
0
10
19.
45
-
0
=
25
45
40
35
20.
5
-
5
=
5
10
15
0
21.
50
-
25
=
20
35
25
30
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Oefen de erafsommen tot 50
| ANTWOORDEN

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