Maak de erafsom tot 20

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

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