Rekensommen met eraf tot 50

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

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