Reken de erafsom tot 20 uit

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

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