Reken de erafsom tot 50 uit

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

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