The first question: Beibei does it quickly, 0.8 = 8/ 10 = 4/5.

Question 2: The height of Xiao Qiang is 1 5/8m, which means 1+ 5/8= 1.625, so floret is the tallest and Xiao Qiang is the shortest.

Question 3: 3/4 = 0.75