Reken de erafsom tot 20 uit

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

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