Reken de erafsom tot 50 uit

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

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