Rekensommen met eraf tot 50

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

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