Reken de erafsom tot 50 uit

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

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