Oefen de erafsommen tot 20

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

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