Reken de erafsommen tot 50 uit

Erafsommen
1.
45
-
35
=
10
0
2.
40
-
40
=
0
10
3.
40
-
30
=
10
0
4.
45
-
10
=
35
45
5.
45
-
45
=
20
0
6.
25
-
10
=
25
15
7.
40
-
15
=
25
15
8.
45
-
40
=
20
5
9.
20
-
10
=
15
10
10.
25
-
25
=
20
0
11.
25
-
25
=
20
0
12.
25
-
10
=
15
10
13.
25
-
0
=
25
35
14.
25
-
0
=
25
35
15.
35
-
25
=
10
0
16.
5
-
5
=
0
10
17.
30
-
25
=
20
5
18.
40
-
40
=
10
0
19.
45
-
10
=
30
35
20.
20
-
0
=
15
20
21.
10
-
0
=
15
10
22.
15
-
10
=
5
20
23.
10
-
5
=
20
5
24.
40
-
20
=
30
20
25.
5
-
0
=
20
5
26.
25
-
5
=
20
30
27.
5
-
0
=
5
10
28.
25
-
10
=
15
25
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Reken de erafsommen tot 50 uit
| ANTWOORDEN

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