Maak de erafsom tot 20

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

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