Answer:
4.24
Step-by-step explanation:
See the attached diagram.
The models show a total of 3 wholes, 12 tenths, and 4 hundredths.
After regrouping 10 tenths into one whole there are 4 wholes, 2 tenths, and 4 hundredths.
Therefore, the sum of the numbers is (4 + 0.2 + 0.04) = 4.24. (Answer)
