Reken de erafsom tot 20 uit

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

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