Rekensommen met eraf tot 50

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

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