Rekensommen met eraf tot 50

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

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