Oefen de erafsommen tot 20

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

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