Maak de erafsom tot 20

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

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