Reken de erafsom tot 20 uit

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

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