Erafsommen oplossen tot 20

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

Erafsommen oplossen tot 20
| ANTWOORDEN

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