Rekensommen met eraf tot 50

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

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