Oefen de erafsommen tot 20

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

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