Oefen de erafsommen tot 20

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

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