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Mathematics

Common fractions

Educator section

Memorandum

1. a) 7 10 size 12{ { { size 8{7} } over { size 8{"10"} } } } {}

b) 3 10 size 12{ { { size 8{3} } over { size 8{"10"} } } } {}

c) 4 10 size 12{ { { size 8{4} } over { size 8{"10"} } } } {} or 2 5 size 12{ { { size 8{2} } over { size 8{5} } } } {}

d) 6 10 size 12{ { { size 8{6} } over { size 8{"10"} } } } {} or 3 5 size 12{ { { size 8{3} } over { size 8{5} } } } {}

3.1 a) a) 1 4 7 size 12{ { { size 8{4} } over { size 8{7} } } } {}

b) 2 2 7 size 12{ { { size 8{2} } over { size 8{7} } } } {}

b) a) - 3 4 size 12{ { { size 8{3} } over { size 8{4} } } } {}

b) - 1 4 size 12{ { { size 8{1} } over { size 8{4} } } } {}

c) 2 3 4 size 12{ { { size 8{3} } over { size 8{4} } } } {}

c) a) 98 3 5 size 12{ { { size 8{3} } over { size 8{5} } } } {}

b) 99 1 5 size 12{ { { size 8{1} } over { size 8{5} } } } {}

c) 100 4 5 size 12{ { { size 8{4} } over { size 8{5} } } } {}

  1. 102 {} 1 5 size 12{ { { size 8{1} } over { size 8{5} } } } {}

Leaner section

Content

Activity: fractions [lo 2.7.4, lo 1.10]

1. Let us start straight away! Look carefully at the picture.

Work with a friend to find out:

a) What fraction of the class is girls? .__________________________________

b) What fraction of the class is boys? __________________________________

c) What fraction of the learners is sitting? _______________________________

d) What fraction of the learners is standing? _____________________________

2. Conduct a survey of the learners in YOUR class and complete the table:

FRACTION OF THE CLASS GIRLS BOYS
Fraction that has blue eyes _________ _________
Fraction with blonde hair _________ _________
Fraction that loves Maths _________ _________
Fraction that takes part in sport _________ _________
Fraction that studies music _________ _________

3.1 Write down the fraction indicated by the arrows.

a)

(a) ___________________

(b) ___________________

b)

(a) ___________________

(b) ___________________

(c) ___________________

c)

(a) ___________________

(b) ___________________

(c) ___________________

(d) ___________________

3.2 Did you know?

When there are negative and positive numbers on a number line together with fractions, these numbers are called rational numbers. All these number lines above are thus number lines containing rational numbers.

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 1.10: 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 2.7: We know this when the learner determines, analyses and interprets the equivalence of different descriptions of the same relationship or rule presented:

2.7.4: by equations or expressions.

Questions & Answers

Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
NANO
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
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Source:  OpenStax, Mathematics grade 7. OpenStax CNX. Sep 16, 2009 Download for free at http://cnx.org/content/col11075/1.1
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