Rekensommen met eraf tot 50

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

Rekensommen met eraf tot 50
| ANTWOORDEN

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