Oefen de erafsommen tot 20

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

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