Reken de erafsom tot 20 uit

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

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