Reken de erafsom tot 20 uit

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

Reken de erafsom tot 20 uit
| ANTWOORDEN

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