   # Evaluate each of the following mathematical expressions, and express the answer to the correct number of significant digits. 44.2124 + 0.81 + 7.335 9.7789 t 3.3315 − 2.21 0.8891 + 0.225 + 4.14 (7.223 + 9.14 + 3.7795)/3.1 ### Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781337399425

#### Solutions

Chapter
Section ### Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781337399425
Chapter 2, Problem 47QAP
Textbook Problem
3 views

## Evaluate each of the following mathematical expressions, and express the answer to the correct number of significant digits. 44.2124 + 0.81 + 7.335 9.7789 t 3.3315 − 2.21 0.8891 + 0.225 + 4.14 (7.223 + 9.14 + 3.7795)/3.1

Interpretation Introduction

(a)

Interpretation:

The following mathematical expression should be evaluated and the answer should be expressed in correct significant digits.

44.2124+0.81+7.335.

Concept Introduction:

During addition or subtraction, the final answer should be rounded off for minimum number of digits after the decimal for more accuracy.

Decimal place is the position of digit right to the decimal point.

In division and multiplication, the calculated values are always rounded up to minimum number of significant figures.

Initially the calculation is carry out without considering the significant figures, the rounding off is done after the completion of all the calculations.

Rules for rounding off numbers are as follows:

1. If the number to be rounded off is followed by digit 5 or greater than 5, the number will be rounded up.
2. If the number to be rounded off is followed by digit zero or less than 5, the number will be rounded down.

### Explanation of Solution

Performing the calculation,

44.2124+0.81+7.335=52.3574

The final answer will have decimal up to two decimal places (minimum number of digit after decimal in the calcu

Interpretation Introduction

(b)

Interpretation:

The following mathematical expression should be evaluated and the answer should be expressed in correct significant digits.

9.7789+3.33152.21

Concept Introduction:

During addition or subtraction, the final answer should be rounded off for minimum number of digits after the decimal for more accuracy.

Decimal place is the position of digit right to the decimal point.

In division and multiplication, the calculated values are always rounded up to minimum number of significant figures.

Initially the calculation is carry out without considering the significant figures, the rounding off is done after the completion of all the calculations.

Rules for rounding off numbers are as follows:

1. If the number to be rounded off is followed by digit 5 or greater than 5, the number will be rounded up.
2. If the number to be rounded off is followed by digit zero or less than 5, the number will be rounded down.
Interpretation Introduction

(c)

Interpretation:

The following mathematical expression should be evaluated and the answer should be expressed in correct significant digits.

0.8891+0.225+4.14

Concept Introduction:

During addition or subtraction, the final answer should be rounded off for minimum number of digits after the decimal for more accuracy.

Decimal place is the position of digit right to the decimal point.

In division and multiplication, the calculated values are always rounded up to minimum number of significant figures.

Initially the calculation is carry out without considering the significant figures, the rounding off is done after the completion of all the calculations.

Rules for rounding off numbers are as follows:

1. If the number to be rounded off is followed by digit 5 or greater than 5, the number will be rounded up.
2. If the number to be rounded off is followed by digit zero or less than 5, the number will be rounded down.
Interpretation Introduction

(d)

Interpretation:

The following mathematical expression should be evaluated and the answer should be expressed in correct significant digits.

(7.223+9.14+3.7795)/3.1

Concept Introduction:

During addition or subtraction, the final answer should be rounded off for minimum number of digits after the decimal for more accuracy.

Decimal place is the position of digit right to the decimal point.

In division and multiplication, the calculated values are always rounded up to minimum number of significant figures.

Initially the calculation is carry out without considering the significant figures, the rounding off is done after the completion of all the calculations.

Rules for rounding off numbers are as follows:

1. If the number to be rounded off is followed by digit 5 or greater than 5, the number will be rounded up.
2. If the number to be rounded off is followed by digit zero or less than 5, the number will be rounded down.

### Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

#### The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Find more solutions based on key concepts
Describe how protons and neutrons were discovered to be constituents of nuclei.

General Chemistry - Standalone book (MindTap Course List)

Digestible carbohydrates are absorbed as through the small intestinal wall and are delivered to the liver, whic...

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

What is the definition of science?

An Introduction to Physical Science

What are sister chromatids?

Human Heredity: Principles and Issues (MindTap Course List)

What gives amino acids their individual properties?

Biology: The Dynamic Science (MindTap Course List)

If the terminals of a battery with zero internal resistance are connected across two identical resistors in ser...

Physics for Scientists and Engineers, Technology Update (No access codes included)

How does the equilibrium theory of tides differ from the dynamic theory?

Oceanography: An Invitation To Marine Science, Loose-leaf Versin 