Reken de erafsom tot 20 uit

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

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