1)
1.2 * 3 = 6
6 : 2 = 3
6 : 3 = 2
2. 6 * 2 = 12
12 : 2 = 6
12 : 6 = 2
3. 2 * 7 = 14
14 : 7 = 2
14 : 2 = 7
4. 4 * 2 = 8
8 : 4 = 2
8 : 2 = 4
5. 9 * 2 = 18
18 : 9 = 2
18 : 2 = 9
2)
1.16 : 8 = 2
8 * 2 = 16
2.14 : 2 = 7
7 * 2 = 14
3.18 : 9 = 2
9 * 2 = 18
4.10 : 5 = 2
5 * 2 = 10