Reken de erafsom tot 20 uit

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

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