Rekensommen met eraf tot 50

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

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