Rekensommen met eraf tot 50

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

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