Reken de erafsom tot 50 uit

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

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