Rekensommen met eraf tot 50

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

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