Erafsommen oplossen tot 20

Erafsommen
1.
17
–
6
=
2.
9
–
6
=
3.
12
–
11
=
4.
5
–
0
=
5.
12
–
4
=
6.
14
–
4
=
7.
12
–
2
=
8.
13
–
3
=
9.
18
–
15
=
10.
3
–
3
=
11.
3
–
0
=
12.
6
–
1
=
13.
4
–
4
=
14.
14
–
1
=
15.
6
–
4
=
16.
12
–
10
=
17.
20
–
13
=
18.
20
–
3
=
19.
10
–
6
=
20.
10
–
3
=
21.
7
–
5
=
22.
19
–
12
=
23.
5
–
0
=
24.
6
–
4
=
25.
12
–
9
=
26.
12
–
4
=
27.
20
–
10
=
28.
2
–
0
=
29.
17
–
11
=
30.
10
–
5
=
31.
16
–
5
=
32.
7
–
0
=
33.
13
–
2
=
34.
8
–
2
=
35.
4
–
1
=
36.
1
–
0
=
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Erafsommen oplossen tot 20
| ANTWOORDEN

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