Rekensommen met eraf tot 50

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

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