Rekensommen met eraf tot 50

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

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