# Decimals: reading and writing decimals  (Page 2/2)

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## Sample set a

Read the following numbers.

6.8

Some people read this as "six point eight." This phrasing gets the message across, but technically, "six and eight tenths" is the correct phrasing.

14.116

0.0019

81

Eighty-one

In this problem, the indication is that any whole number is a decimal fraction. Whole numbers are often called decimal numbers .

$\text{81}=\text{81}\text{.}0$

## Practice set a

Read the following decimal fractions.

12.9

twelve and nine tenths

4.86

four and eighty-six hundredths

7.00002

seven and two hundred thousandths

0.030405

thirty thousand four hundred five millionths

## Writing a decimal fraction

To write a decimal fraction,
1. Write the whole number part.
2. Write a decimal point for the word "and."
3. Write the decimal part of the number so that the right-most digit appears in the position indicated in the word name. If necessary, insert zeros to the right of the decimal point in order that the right-most digit appears in the correct position.

## Sample set b

Write each number.

Thirty-one and twelve hundredths.

The decimal position indicated is the hundredths position.

31.12

Two and three hundred-thousandths.

The decimal position indicated is the hundred thousandths. We'll need to insert enough zeros to the immediate right of the decimal point in order to locate the 3 in the correct position.

2.00003

Six thousand twenty-seven and one hundred four millionths.

The decimal position indicated is the millionths position. We'll need to insert enough zeros to the immediate right of the decimal point in order to locate the 4 in the correct position.

6,027.000104

Seventeen hundredths.

The decimal position indicated is the hundredths position.

0.17

## Practice set b

Write each decimal fraction.

Three hundred six and forty-nine hundredths.

306.49

Nine and four thousandths.

9.004

Sixty-one millionths.

0.000061

## Exercises

For the following three problems, give the decimal name of the posi­tion of the given number in each decimal fraction.

1. 3.941
9 is in the position.
4 is in the position.
1 is in the position.

Tenths; hundredths, thousandths

17.1085
1 is in the position.
0 is in the position.
8 is in the position.
5 is in the position.

652.3561927
9 is in the position.
7 is in the position.

Hundred thousandths; ten millionths

For the following 7 problems, read each decimal fraction by writing it.

9.2

8.1

eight and one tenth

10.15

55.06

fifty-five and six hundredths

0.78

1.904

one and nine hundred four thousandths

10.00011

For the following 10 problems, write each decimal fraction.

Three and twenty one-hundredths.

3.20

Fourteen and sixty seven-hundredths.

One and eight tenths.

1.8

Sixty-one and five tenths.

Five hundred eleven and four thousandths.

511.004

Thirty-three and twelve ten-thousandths.

Nine hundred forty-seven thousandths.

0.947

Two millionths.

Seventy-one hundred-thousandths.

0.00071

One and ten ten-millionths.

## Calculator problems

For the following 10 problems, perform each division using a calculator. Then write the resulting decimal using words.

$3÷4$

seventy-five hundredths

$1÷8$

$4÷\text{10}$

four tenths

$2÷5$

$4÷\text{25}$

sixteen hundredths

$1÷\text{50}$

$3÷\text{16}$

one thousand eight hundred seventy-five ten thousandths

$\text{15}÷8$

$\text{11}÷\text{20}$

fifty-five hundredths

$9÷\text{40}$

## Exercises for review

( [link] ) Round 2,614 to the nearest ten.

2610

( [link] ) Is 691,428,471 divisible by 3?

( [link] ) Determine the missing numerator.
$\frac{3}{14}=\frac{?}{\text{56}}$

12

( [link] ) Find $\frac{3}{\text{16}}\text{of}\frac{\text{32}}{\text{39}}$

( [link] ) Find the value of $\sqrt{\frac{\text{25}}{\text{81}}}+{\left(\frac{2}{3}\right)}^{2}+\frac{1}{9}$

#### Questions & Answers

where we get a research paper on Nano chemistry....?
what are the products of Nano chemistry?
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
hey
Giriraj
Preparation and Applications of Nanomaterial for Drug Delivery
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
I only see partial conversation and what's the question here!
what about nanotechnology for water purification
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
why we need to study biomolecules, molecular biology in nanotechnology?
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
why?
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
how did you get the value of 2000N.What calculations are needed to arrive at it
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