# 3.3 More revision

 Page 1 / 1

## Memorandum

13.4

 a) 2 $\frac{\text{60}}{\text{100}}$ 2,60 b) 13 $\frac{\text{625}}{\text{1000}}$ 13,625 c) 17 $\frac{\text{75}}{\text{100}}$ 17,75 d) 23 $\frac{\text{875}}{\text{1000}}$ 23,875 e) 36 $\frac{8}{\text{10}}$ 36,8

13.5 a) 0,83

1. 0,2857142
2. 0,8125
3. 0,4

13.6

 $\frac{9}{2}$ $\frac{\text{11}}{2}$ $\frac{\text{325}}{\text{100}}$ $\frac{\text{43}}{5}$ $\frac{\text{201}}{8}$ $\frac{\text{4056}}{\text{1000}}$ $\frac{\text{199}}{5}$ 4 $\frac{1}{2}$ 5 $\frac{1}{2}$ 3 $\frac{\text{25}}{\text{100}}$ 8 $\frac{3}{5}$ 25 $\frac{1}{8}$ 4 $\frac{\text{56}}{\text{1000}}$ 39 $\frac{4}{5}$ 4,5 5,5 3,25 8,6 25,125 4,056 39,8

14. a) 0,3

1. 0,6
2. 0,23

## Activity: more revision [lo 1.4.2, lo 1.10, lo 2.3.1, lo 2.3.3]

We can convert proper fractions to decimal fractions in this way:

13.2 Did you know?

We can also calculate it in this way:

13.3 Which of the methods shown above do you choose?

Why?

13.4 Complete the following tables:

13.5 Use the division method as shown in 13.2 and write the following fractions as decimal fractions:

a) $\frac{5}{6}$ ........................................................................... ...........................................................................

...........................................................................

b) $\frac{2}{7}$ ........................................................................... ...........................................................................

...........................................................................

c) $\frac{\text{13}}{\text{16}}$ ........................................................................... ...........................................................................

...........................................................................

d) $\frac{4}{9}$ ........................................................................... ...........................................................................

...........................................................................

13.6 Can you complete the following table??

 Improper fraction $\frac{9}{2}$ $\frac{\text{45}}{5}$ Mixed Number $5\frac{1}{2}$ $\text{25}\frac{1}{8}$ $\text{39}\frac{4}{5}$ Decimal fraction 3,25 4,056

14. BRAIN-TEASERS!

Write the following fractions as decimal fractions. Try to do these sums first without a calculator!

a) $\frac{1}{3}$ ........................................................................... ...........................................................................

...........................................................................

b) $\frac{2}{3}$ ........................................................................... ...........................................................................

...........................................................................

c) $\frac{\text{23}}{\text{99}}$ ........................................................................... ...........................................................................

...........................................................................

15. Do you still remember?

We call 0,666666666 . . . a recurring decimal . We write it as $0,\stackrel{}{6}$ .

0,454545 . . . is also a recurring decimal and we write it as $0,\stackrel{}{4}\stackrel{}{5}$ .

We normally round off these recurring decimals to the first or second decimal place, e.g.: $0,\stackrel{}{6}$ becomes 0,7 or 0,67 and $0,\stackrel{}{4}\stackrel{}{5}$ becomes 0,5 or 0,45

16. Time for self-assessment

 Tick the applicable block: YES NO I can: Compare decimal fractions with each other and put them in the correct sequence. Fill in the correct relationship signs. Round off decimal fractions correctly to: the nearest whole number one decimal place two decimal places three decimal places Convert fractions and improper fractions correctly to decimal fractions. Explain what a recurring decimal is.

## Assessment

Learning Outcome 1: The learner will be able to recognise, describe and represent numbers and their relationships, and to count, estimate, calculate and check with competence and confidence in solving problems.

Assessment Standard 1.4: We know this when the learner recognises and uses equivalent forms of the rational numbers listed above, including:

1.4.2 decimals;

Assessment Standard 1.10: We know this when the learner uses a range of strategies to check solutions and judges the reasonableness of solutions.

Learning Outcome 2: The learner will be able to recognise, describe and represent patterns and relationships, as well as to solve problems using algebraic language and skills.

Assessment Standard 2.3: We know this when the learner represents and uses relationships between variables in a variety of ways using:

2.3.1 verbal descriptions;

2.3.3 tables.

are nano particles real
yeah
Joseph
Hello, if I study Physics teacher in bachelor, can I study Nanotechnology in master?
no can't
Lohitha
where we get a research paper on Nano chemistry....?
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
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
has a lot of application modern world
Kamaluddeen
yes
narayan
what is variations in raman spectra for nanomaterials
ya I also want to know the raman spectra
Bhagvanji
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
how did you get the value of 2000N.What calculations are needed to arrive at it
Privacy Information Security Software Version 1.1a
Good
Got questions? Join the online conversation and get instant answers!