Reken de erafsom tot 50 uit

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

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