Rekensommen met eraf tot 50

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

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