Erafsommen tot 50 maken

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

Erafsommen tot 50 maken
| ANTWOORDEN

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