Reken de erafsom tot 20 uit

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

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