Oefen de erafsommen tot 20

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

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