Rekensommen met eraf tot 50

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

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