Rekensommen met eraf tot 50

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

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