Reken de erafsom tot 50 uit

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

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