Oefen de erafsommen tot 50

Erafsommen
1.
10
-
10
=
10
0
5
15
2.
45
-
5
=
35
30
20
40
3.
20
-
10
=
15
0
20
10
4.
35
-
0
=
25
40
30
35
5.
50
-
35
=
15
5
10
20
6.
40
-
0
=
40
25
30
20
7.
20
-
0
=
25
20
15
30
8.
50
-
15
=
40
35
30
45
9.
50
-
45
=
10
25
5
15
10.
35
-
5
=
25
20
35
30
11.
30
-
20
=
0
10
5
20
12.
30
-
0
=
25
35
30
20
13.
10
-
5
=
25
15
10
5
14.
50
-
30
=
25
20
30
10
15.
10
-
0
=
15
20
0
10
16.
10
-
0
=
5
0
15
10
17.
50
-
25
=
35
15
25
20
18.
45
-
30
=
25
15
10
20
19.
35
-
5
=
30
35
40
20
20.
20
-
20
=
10
0
20
5
21.
30
-
20
=
0
15
10
5

Oefen de erafsommen tot 50
| ANTWOORDEN

Erafsommen
1.
10
-
10
=
10
0
5
15
2.
45
-
5
=
35
30
20
40
3.
20
-
10
=
15
0
20
10
4.
35
-
0
=
25
40
30
35
5.
50
-
35
=
15
5
10
20
6.
40
-
0
=
40
25
30
20
7.
20
-
0
=
25
20
15
30
8.
50
-
15
=
40
35
30
45
9.
50
-
45
=
10
25
5
15
10.
35
-
5
=
25
20
35
30
11.
30
-
20
=
0
10
5
20
12.
30
-
0
=
25
35
30
20
13.
10
-
5
=
25
15
10
5
14.
50
-
30
=
25
20
30
10
15.
10
-
0
=
15
20
0
10
16.
10
-
0
=
5
0
15
10
17.
50
-
25
=
35
15
25
20
18.
45
-
30
=
25
15
10
20
19.
35
-
5
=
30
35
40
20
20.
20
-
20
=
10
0
20
5
21.
30
-
20
=
0
15
10
5