Reken de erafsom tot 50 uit

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

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