Maak de erafsom tot 20

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

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