Rekensommen met eraf tot 50

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

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