Oefen de erafsommen tot 20

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

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