Rekensommen met eraf tot 50

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

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