Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 4 - Section 4.5 - Addition and Subtraction of Measurements - Exercise - Page 185: 7

Answer

a. all b. 0.391 cm

Work Step by Step

a. Since the measurements 145 cm, 73.2 cm, 2560 cm, and 0.391 cm all have 3 significant digits (the most), then they are the most accurate. b. Since the precision of the measurement 0.391 cm is 0.001, then it is the most precise measurement. The other numbers have precisions of 1, 0.1 and 10, which are all larger.
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