Rekensommen met eraf tot 50

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

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