Erafsommen oplossen tot 20

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

Erafsommen oplossen tot 20
| ANTWOORDEN

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