Reken de erafsom tot 50 uit

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

Reken de erafsom tot 50 uit
| ANTWOORDEN

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