1. Multiplication or division: keep the same number of significant figures in the product orquotient as is in the least precise factor.Examples:3.1 * 25.6=79.360000...= 796.7/981.0=0.0068297655...= 0.0068keep only 2 significant digits2. Powers or roots: keep the same number of significant figures as in the original number.Example:Sqrt(38) 6.164414...keep only 2 significant digits= 6.2(11.6)² = 134.5600000...= 135Exercises3. Addition or subtraction: Round off, to the number of decimal places determined by thenumber with the least number of places beyond the decimal point.Example:31.5+24.61 +3.28+1.19 +0.762 +0.003 = 61.3451. 3.9 * 78.9== 61.3 (correct result)2. 32.01 +96.321 +36.98 +0.00023 +28.9=3. 26.9/98 =4. 421 0.003 =

to solve : using the significant figures rules

Answered: Exercises 1. 3.9 * 78.9= = 61.3…

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Exercises 1. 3.9 * 78.9= = 61.3 (correct result) 2. 32.01 +96.321 +36.98 +0.00023 +28.9= 3. 26.9/98 = 4. 421 0.003=

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Introduction

Section: Chapter Questions

Problem 8P

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Question

1. Multiplication or division: keep the same number of significant figures in the product or
quotient as is in the least precise factor.
Examples:
3.1 * 25.6=79.360000...
= 79
6.7/981.0=0.0068297655...
= 0.0068
keep only 2 significant digits
2. Powers or roots: keep the same number of significant figures as in the original number.
Example:
Sqrt(38) 6.164414...
keep only 2 significant digits
= 6.2
(11.6)² = 134.5600000...
= 135
Exercises
3. Addition or subtraction: Round off, to the number of decimal places determined by the
number with the least number of places beyond the decimal point.
Example:
31.5+24.61 +3.28+1.19 +0.762 +0.003 = 61.345
1. 3.9 * 78.9=
= 61.3 (correct result)
2. 32.01 +96.321 +36.98 +0.00023 +28.9=
3. 26.9/98 =
4. 421 0.003 =

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