Erafsommen tot 50 maken

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

Erafsommen tot 50 maken
| ANTWOORDEN

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