Erafsommen oplossen tot 20

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

Erafsommen oplossen tot 20
| ANTWOORDEN

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