Oefen de erafsommen tot 20

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

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