Oefen de erafsommen tot 20

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

Oefen de erafsommen tot 20
| ANTWOORDEN

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