Erafsommen oplossen tot 20

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

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