Rekensommen met eraf tot 50

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

Rekensommen met eraf tot 50
| ANTWOORDEN

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