Erafsommen oplossen tot 50

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

Erafsommen oplossen tot 50
| ANTWOORDEN

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