Reken de erafsom tot 20 uit

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

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