Erafsommen oplossen tot 20

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

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