Oefen de erafsommen tot 20

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

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