What is the sum of this image?

Answer:
0.421
Step-by-step explanation:
Tenths = 0.1
Hundredths = 0.01
Thousandths = 0.001
In the first image, there is 1 tenth, 3 hundredths, and 7 thousandths, making it 0.137.
The second image is 2 tenths, 8 hundredths, and 4 thousandths, making it 0.284.
Adding these two numbers will give you 0.421.