Welk getal uit de tafelsom tot en met 10 ontbreekt?

Tafels
1.
1 × 10 =
10
80
70
100
2.
4 × 2 =
8
20
6
16
3.
6 × 2 =
4
8
20
12
4.
4 × 2 =
2
8
16
20
5.
3 × 5 =
50
40
5
15
6.
5 × 1 =
5
8
7
2
7.
5 × 3 =
6
18
15
21
8.
8 × 9 =
18
72
81
36
9.
4 × 10 =
100
40
50
30
10.
8 × 5 =
40
30
35
45
11.
9 × 5 =
30
40
50
45
12.
7 × 6 =
42
6
24
48
13.
7 × 9 =
90
54
45
63
14.
2 × 10 =
70
80
20
40
15.
5 × 5 =
5
25
45
40
16.
3 × 8 =
16
24
64
80
17.
2 × 2 =
4
8
18
14
18.
8 × 4 =
40
24
28
32
19.
1 × 5 =
50
45
35
5
20.
4 × 1 =
10
9
4
3

Welk getal uit de tafelsom tot en met 10 ontbreekt?
| ANTWOORDEN

Tafels
1.
1 × 10 =
10
80
70
100
2.
4 × 2 =
8
20
6
16
3.
6 × 2 =
4
8
20
12
4.
4 × 2 =
2
8
16
20
5.
3 × 5 =
50
40
5
15
6.
5 × 1 =
5
8
7
2
7.
5 × 3 =
6
18
15
21
8.
8 × 9 =
18
72
81
36
9.
4 × 10 =
100
40
50
30
10.
8 × 5 =
40
30
35
45
11.
9 × 5 =
30
40
50
45
12.
7 × 6 =
42
6
24
48
13.
7 × 9 =
90
54
45
63
14.
2 × 10 =
70
80
20
40
15.
5 × 5 =
5
25
45
40
16.
3 × 8 =
16
24
64
80
17.
2 × 2 =
4
8
18
14
18.
8 × 4 =
40
24
28
32
19.
1 × 5 =
50
45
35
5
20.
4 × 1 =
10
9
4
3