Rekensommen met eraf tot 50

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

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