Maak de erafsom tot 20

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

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