Rekensommen met eraf tot 50

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

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