Chapter 1, Problem 1.78QP

(a)

Interpretation Introduction

Interpretation:

The given number $\text{123700}$ has to be rounded to three significant figures.

Concept Introduction:

Rounding off a number:

• The last digit retained is left unchanged if the following digit is less than five.
• The last digit retained is increased by one if the following digit is greater than five.
• If the last digit retained is followed by a single digit of five or by a five followed by zeroes, then the last digit is increased by one if it is odd number and remains as same if it is even number.

(b)

Interpretation Introduction

Interpretation:

The given number $\text{0}\text{.00285792}$ has to be rounded to three significant figures.

Concept Introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

The given number $\text{1}\text{.421}\text{×}{\text{10}}^{\text{-3}}$ has to be rounded to three significant figures.

Concept Introduction:

Refer to part (a).

(d)

Interpretation Introduction

Interpretation:

The given number $\text{53}\text{.2995}$ has to be rounded to three significant figures.

Concept Introduction:

Refer to part (a).

(e)

Interpretation Introduction

Interpretation:

The given number $\text{16}\text{.96}$ has to be rounded to three significant figures.

Concept Introduction:

Refer to part (a).

(f)

Interpretation Introduction

Interpretation:

The given number $\text{507}\text{.5}$ has to be rounded to three significant figures.

Concept Introduction:

Refer to part (a).