Reken de erafsom tot 50 uit

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

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