8 ones 9 hundredths - 3.4

8 ones = 1 X 8 = 8

0 tenths = 0 X 1/10 = 0

9 hundredths = 9 X 1/100 = 0.09.

Now we can add everything together to obtain the value.

8 + 0 + 0.09 = 8.09.

Now we can find the difference between the 2 values.

8.09 - 3.40 = 4.69.

4.69 is the final answer.