Not exactly, the correct answer is 260.2.  Be sure to line up the decimal points when adding a column of numbers.

I recommend reading Volume 1 of the Learn Math Fast System.  That book will teach you how to quickly add, subtract, multiply and divide numbers with decimal points.  Plus, you'll learn a lot of cool tricks to make math easier to solve.  If you're an older student, you can complete that book in about a month.  Younger students will need more time.  Use coupon code PT2026 to save 10%.