Rekensommen met eraf tot 50

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

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