Oefen de erafsommen tot 50

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

Oefen de erafsommen tot 50
| ANTWOORDEN

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