Step 1. First, read the digits to the left of the decimal point as a whole number.
Step 2. Say and for the decimal point.
Step 3. Read the digits to the right of the decimal point as a whole number
Step 4. Say the place name of the last digit.
In your case 7.75 in word form is seven and seventy five hundredths.
Answer: seven and seventy five hundredths.