Reken de erafsom tot 50 uit

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

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