Reken de erafsom tot 50 uit

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

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