What do 100. and 50. mean? Chemistry Measurement Significant Figures 1 Answer Meave60 Sep 4, 2017 You are correct, and 50. is the same as 5.0×101. Answer link Related questions What are rounding and significant figures? How can I round significant figures when multiplying? How can I round significant figures in Excel? Why should I use significant figures in chemistry? Question #1cb75 When I am doing calculations, how much should I round of the masses in the Periodic Table? What are significant figures and why do they matter? Question #8372c Question #b65fe Question #0a2eb See all questions in Significant Figures Impact of this question 2111 views around the world You can reuse this answer Creative Commons License