Reken de erafsom tot 20 uit

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

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