Oefen de erafsommen tot 20

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

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