Reken de erafsom tot 50 uit

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

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