Rekensommen met eraf tot 50

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

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