Maak de erafsom tot 20

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

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