Reken de erafsom tot 20 uit

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

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