Rekensommen met eraf tot 50

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

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