Reken de erafsom tot 20 uit

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

Reken de erafsom tot 20 uit
| ANTWOORDEN

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