Rekensommen met eraf tot 50

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

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