Answer:
Green house
5
5
5
4
Blue house
12
2
2 and 12
6
Explanation:
Green house
Multiples of 4: 4, 8, 12, 16, 20, ...
Therefore, 5 fours make 20, so
5 x 4 = 20
This means 20 ÷ 4 = 5
And 4 x 5 = 20
And 20 ÷ 5 = 4
Blue house
2 x 6 = 2 sixes = 6 + 6 = 12
So 12 ÷ 2 = 6
And 6 x 2 = 12
And 1 2 ÷ 6 = 2