Rekensommen met eraf tot 50

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

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