Oefen de erafsommen tot 20

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

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