Reken de erafsom tot 20 uit

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

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