Rekensommen met eraf tot 50

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

Rekensommen met eraf tot 50
| ANTWOORDEN

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