Reken de erafsommen tot 50 uit

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

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