Reken de erafsom tot 20 uit

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

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