Oefen de erafsommen tot 50

Erafsommen
1.
35
–
35
=
2.
15
–
5
=
3.
5
–
5
=
4.
35
–
5
=
5.
10
–
5
=
6.
40
–
15
=
7.
50
–
25
=
8.
35
–
5
=
9.
10
–
0
=
10.
20
–
15
=
11.
30
–
30
=
12.
45
–
0
=
13.
35
–
30
=
14.
5
–
0
=
15.
5
–
5
=
16.
45
–
10
=
17.
25
–
20
=
18.
5
–
5
=
19.
45
–
0
=
20.
30
–
10
=
21.
20
–
20
=
22.
25
–
5
=
23.
10
–
0
=
24.
50
–
30
=
25.
25
–
15
=
26.
40
–
10
=
27.
5
–
5
=
28.
5
–
0
=
29.
30
–
0
=
30.
45
–
5
=
31.
10
–
10
=
32.
15
–
0
=
33.
50
–
30
=
34.
45
–
5
=
35.
5
–
0
=
36.
35
–
25
=
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Oefen de erafsommen tot 50
| ANTWOORDEN

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