Rekensommen met eraf tot 50

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

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