Erafsommen oplossen tot 20

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

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