Erafsommen oplossen tot 20

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

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