Reken de erafsom tot 20 uit

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

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