Oefen de erafsommen tot 20

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

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