Reken de erafsom tot 50 uit

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

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