Rekensommen met eraf tot 50

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

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