Answer:
45
Explanation:
1. 3.4 + 6.6 can be simplified to 3 + 6 and 0.4 + 0.6
2. 3 + 6 = 9
3. 0.4 + 0.6 = 1
4. 9 + 1 = 10 (3.4 + 6.6 = 10)
1. 1.8 + 2.7 can use the same thing
2. 1 + 2 = 3
3. 0.8 + 0.7 = 1.5
4. 3 + 1.5 = 4.5 (1.8 + 2.7 = 4.5)
End: 10 x 4.5 = 45!
Hope this helped!