Erafsommen oplossen tot 20

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

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