Erafsommen oplossen tot 50

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

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