Question

What is? 

Answer 1

3.4, 13, 18.4, 44.3, 82.4, 49.3     :) hope this helped 

Answer 2

3.44 = 3.4 since 4 in the hundredths is nearer to 0
12.09 = 12.1 since 9 is near the next digit
Do the same with these:
18.39 = 18.4
44.347 = 44.3
82.383 = 82.4
49.2532 = 49.3