Oefen de erafsommen tot 20

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

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