Rekensommen met eraf tot 50

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

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