Reken de erafsom tot 20 uit

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

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