Rekensommen met eraf tot 50

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

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