Erafsommen oplossen tot 50

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

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