Maak de erafsom tot 20

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

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