Deelsommen door elkaar. Welk getal ontbreekt?

Deeltafels
1.
1
:
1
=
=
2.
10
:
10
=
=
3.
18
:
9
=
=
4.
3
:
3
=
=
5.
12
:
6
=
=
6.
56
:
7
=
=
7.
80
:
8
=
=
8.
30
:
5
=
=
9.
12
:
6
=
=
10.
28
:
4
=
=
11.
30
:
3
=
=
12.
72
:
9
=
=
13.
15
:
3
=
=
14.
18
:
6
=
=
15.
36
:
6
=
=
16.
20
:
5
=
=
17.
3
:
1
=
=
18.
5
:
1
=
=
19.
14
:
2
=
=
20.
16
:
2
=
=
21.
7
:
1
=
=

Deelsommen door elkaar. Welk getal ontbreekt?
| ANTWOORDEN

Deeltafels
1.
1
:
1
=
=
1
2.
10
:
10
=
=
1
3.
18
:
9
=
=
2
4.
3
:
3
=
=
1
5.
12
:
6
=
=
2
6.
56
:
7
=
=
8
7.
80
:
8
=
=
10
8.
30
:
5
=
=
6
9.
12
:
6
=
=
2
10.
28
:
4
=
=
7
11.
30
:
3
=
=
10
12.
72
:
9
=
=
8
13.
15
:
3
=
=
5
14.
18
:
6
=
=
3
15.
36
:
6
=
=
6
16.
20
:
5
=
=
4
17.
3
:
1
=
=
3
18.
5
:
1
=
=
5
19.
14
:
2
=
=
7
20.
16
:
2
=
=
8
21.
7
:
1
=
=
7