Rekensommen met eraf tot 50

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

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