Reken de erafsom tot 50 uit

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

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