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Did you know?

2 5 size 12{ { { size 8{2} } over { size 8{5} } } } {} is a proper fraction. The numerator is smaller than the denominator.
9 4 size 12{ { { size 8{9} } over { size 8{4} } } } {} is an improper fraction. The numerator is bigger than the denominator.
1 2 3 size 12{1 { { size 8{2} } over { size 8{3} } } } {} is a mixed number . A mixed number is always bigger than 1 and consists of a whole number (1) plus a fraction ( 2 3 size 12{ { { size 8{2} } over { size 8{3} } } } {} ).

Activity 3:

To calculate by means of computations that are suitable to be used in adding ordinary fractions [lo 1.8.3]

1. Can you still remember how to add fractions? Let us see. Work together with a friend. Take turns to say the answers. Choose any two fractions and add them. Give your answer first as an improper fraction and then as a mixed number.

Ask your teacher’s help if you struggle.

1.1
1.2

Activity 4:

To recognise and use equivalent forms [lo 1.5.1]

1. Look carefully at the following questions and then complete them as neatly as possible.

EQUIVALENT FRACTIONS

1.1 Colour 1 2 size 12{ { { size 8{1} } over { size 8{2} } } } {} of the figure in blue:
1.2 Colour 2 4 size 12{ { { size 8{2} } over { size 8{4} } } } {} of the figure in green:
1.3 Colour 4 8 size 12{ { { size 8{4} } over { size 8{8} } } } {} of the figure in yellow:
1.4 Colour 8 16 size 12{ { { size 8{8} } over { size 8{"16"} } } } {} of the figure in red:
  • What do you notice?
1.6 Complete:
1
2
=
....
4
=
4
....
=
....
16

Did you know?

We call fractions that are equal in size, equivalent fractions. The word equivalent means ‘the same as’ . Thus the fractions are equal.

Do you remember?

1 unit
1 2 size 12{ { { size 8{1} } over { size 8{2} } } } {} 1 2 size 12{ { { size 8{1} } over { size 8{2} } } } {}
1 3 size 12{ { { size 8{1} } over { size 8{3} } } } {} 1 3 size 12{ { { size 8{1} } over { size 8{3} } } } {} 1 3 size 12{ { { size 8{1} } over { size 8{3} } } } {}
1 4 size 12{ { { size 8{1} } over { size 8{4} } } } {} 1 4 size 12{ { { size 8{1} } over { size 8{4} } } } {} 1 4 size 12{ { { size 8{1} } over { size 8{4} } } } {} 1 4 size 12{ { { size 8{1} } over { size 8{4} } } } {}
1 5 size 12{ { { size 8{1} } over { size 8{5} } } } {} 1 5 size 12{ { { size 8{1} } over { size 8{5} } } } {} 1 5 size 12{ { { size 8{1} } over { size 8{5} } } } {} 1 5 size 12{ { { size 8{1} } over { size 8{5} } } } {} 1 5 size 12{ { { size 8{1} } over { size 8{5} } } } {}
1 6 size 12{ { { size 8{1} } over { size 8{6} } } } {} 1 6 size 12{ { { size 8{1} } over { size 8{6} } } } {} 1 6 size 12{ { { size 8{1} } over { size 8{6} } } } {} 1 6 size 12{ { { size 8{1} } over { size 8{6} } } } {} 1 6 size 12{ { { size 8{1} } over { size 8{6} } } } {} 1 6 size 12{ { { size 8{1} } over { size 8{6} } } } {}
1 7 size 12{ { { size 8{1} } over { size 8{7} } } } {} 1 7 size 12{ { { size 8{1} } over { size 8{7} } } } {} 1 7 size 12{ { { size 8{1} } over { size 8{7} } } } {} 1 7 size 12{ { { size 8{1} } over { size 8{7} } } } {} 1 7 size 12{ { { size 8{1} } over { size 8{7} } } } {} 1 7 size 12{ { { size 8{1} } over { size 8{7} } } } {} 1 7 size 12{ { { size 8{1} } over { size 8{7} } } } {}
1 8 size 12{ { { size 8{1} } over { size 8{8} } } } {} 1 8 size 12{ { { size 8{1} } over { size 8{8} } } } {} 1 8 size 12{ { { size 8{1} } over { size 8{8} } } } {} 1 8 size 12{ { { size 8{1} } over { size 8{8} } } } {} 1 8 size 12{ { { size 8{1} } over { size 8{8} } } } {} 1 8 size 12{ { { size 8{1} } over { size 8{8} } } } {} 1 8 size 12{ { { size 8{1} } over { size 8{8} } } } {} 1 8 size 12{ { { size 8{1} } over { size 8{8} } } } {}
1 9 size 12{ { { size 8{1} } over { size 8{9} } } } {} 1 9 size 12{ { { size 8{1} } over { size 8{9} } } } {} 1 9 size 12{ { { size 8{1} } over { size 8{9} } } } {} 1 9 size 12{ { { size 8{1} } over { size 8{9} } } } {} 1 9 size 12{ { { size 8{1} } over { size 8{9} } } } {} 1 9 size 12{ { { size 8{1} } over { size 8{9} } } } {} 1 9 size 12{ { { size 8{1} } over { size 8{9} } } } {} 1 9 size 12{ { { size 8{1} } over { size 8{9} } } } {} 1 9 size 12{ { { size 8{1} } over { size 8{9} } } } {}
1 10 size 12{ { { size 8{1} } over { size 8{"10"} } } } {} 1 10 size 12{ { { size 8{1} } over { size 8{"10"} } } } {} 1 10 size 12{ { { size 8{1} } over { size 8{"10"} } } } {} 1 10 size 12{ { { size 8{1} } over { size 8{"10"} } } } {} 1 10 size 12{ { { size 8{1} } over { size 8{"10"} } } } {} 1 10 size 12{ { { size 8{1} } over { size 8{"10"} } } } {} 1 10 size 12{ { { size 8{1} } over { size 8{"10"} } } } {} 1 10 size 12{ { { size 8{1} } over { size 8{"10"} } } } {} 1 10 size 12{ { { size 8{1} } over { size 8{"10"} } } } {} 1 10 size 12{ { { size 8{1} } over { size 8{"10"} } } } {}
1 11 size 12{ { { size 8{1} } over { size 8{"11"} } } } {} 1 11 size 12{ { { size 8{1} } over { size 8{"11"} } } } {} 1 11 size 12{ { { size 8{1} } over { size 8{"11"} } } } {} 1 11 size 12{ { { size 8{1} } over { size 8{"11"} } } } {} 1 11 size 12{ { { size 8{1} } over { size 8{"11"} } } } {} 1 11 size 12{ { { size 8{1} } over { size 8{"11"} } } } {} 1 11 size 12{ { { size 8{1} } over { size 8{"11"} } } } {} 1 11 size 12{ { { size 8{1} } over { size 8{"11"} } } } {} 1 11 size 12{ { { size 8{1} } over { size 8{"11"} } } } {} 1 11 size 12{ { { size 8{1} } over { size 8{"11"} } } } {} 1 11 size 12{ { { size 8{1} } over { size 8{"11"} } } } {}
1 12 size 12{ { { size 8{1} } over { size 8{"12"} } } } {} 1 12 size 12{ { { size 8{1} } over { size 8{"12"} } } } {} 1 12 size 12{ { { size 8{1} } over { size 8{"12"} } } } {} 1 12 size 12{ { { size 8{1} } over { size 8{"12"} } } } {} 1 12 size 12{ { { size 8{1} } over { size 8{"12"} } } } {} 1 12 size 12{ { { size 8{1} } over { size 8{"12"} } } } {} 1 12 size 12{ { { size 8{1} } over { size 8{"12"} } } } {} 1 12 size 12{ { { size 8{1} } over { size 8{"12"} } } } {} 1 12 size 12{ { { size 8{1} } over { size 8{"12"} } } } {} 1 12 size 12{ { { size 8{1} } over { size 8{"12"} } } } {} 1 12 size 12{ { { size 8{1} } over { size 8{"12"} } } } {} 1 12 size 12{ { { size 8{1} } over { size 8{"12"} } } } {}

2. The following activity will prepare you for the addition and subtraction of fractions. Use your knowledge of equivalent fractions and answer the following. Where you are in doubt, use the diagram above.

2.1: 1 2 = 10 size 12{ { { size 8{1} } over { size 8{2} } } = { { size 8{ dotslow } } over { size 8{"10"} } } } {}

2.2: 2 3 = 6 size 12{ { { size 8{2} } over { size 8{3} } } = { { size 8{ dotslow } } over { size 8{6} } } } {}

2.3: 5 = 8 10 size 12{ { { size 8{ dotslow } } over { size 8{5} } } = { { size 8{8} } over { size 8{"10"} } } } {}

2.4: 1 4 = 12 size 12{ { { size 8{1} } over { size 8{4} } } = { { size 8{ dotslow } } over { size 8{"12"} } } } {}

2.5: 5 = 10 12 size 12{ { { size 8{5} } over { size 8{ dotslow } } } = { { size 8{"10"} } over { size 8{"12"} } } } {}

2.6: 4 10 = 5 size 12{ { { size 8{4} } over { size 8{"10"} } } = { { size 8{ dotslow } } over { size 8{5} } } } {}

2.7: 1 3 = 3 size 12{ { { size 8{1} } over { size 8{3} } } = { { size 8{3} } over { size 8{ dotslow } } } } {}

2.8: 6 = 1 2 size 12{ { { size 8{ dotslow } } over { size 8{6} } } = { { size 8{1} } over { size 8{2} } } } {}

2.9: 3 6 = 12 size 12{ { { size 8{3} } over { size 8{6} } } = { { size 8{ dotslow } } over { size 8{"12"} } } } {}

2.10: 4 6 = 9 size 12{ { { size 8{4} } over { size 8{6} } } = { { size 8{ dotslow } } over { size 8{9} } } } {}

Assessment

Learning outcomes(LOs)
LO 1
Numbers, Operations and RelationshipsThe learner is able to recognise, describe and represent numbers and their relationships, and counts, estimates, calculates and checks with competence and confidence in solving problems.
Assessment standards(ASs)
We know this when the learner:
1.1 counts forwards and backwards fractions;
1.2 describes and illustrates various ways of writing numbers in different cultures (including local) throughout history;
1.3 recognises and represents the following numbers in order to describe and compare them:
  • common fractions to at least twelfths;
1.5 recognises and uses equivalent forms of the numbers listed above, including:
1.5.1 common fractions with denominators that are multiples of each other;
1.6 solves problems in context including contexts that may be used to build awareness of other Learning Areas, as well as human rights, social, economic and environmental issues such as:
  • financial (including buying and selling, profit and loss, and simple budgets);
LO 5
Data handlingThe learner will be able to collect, summarise, display and critically analyse data in order to draw conclusions and make predictions, and to interpret and determine chance variation.
We know this when the learner:
5.3 organises and records data using tallies and tables;
5.5 draws a variety of graphs to display and interpret data (ungrouped) including:
  • a pie graph.

Memorandum

ACTIVITY 1

1.1 Equal parts of a whole

1.2 Nominator

1.3 size 12{ div } {}

1.4 Say in how many equal parts the whole is divided

1.5 Smaller

1.6 Nominator

1.7 Equivalents

1.8 Larger

1.9 Say with how many equal parts I work / are coloured in

1.10 Divide the nominator and denominator by the same number

2. 2.1 b and c

  • c and e
  • a en b

2.4 Not equal parts

2.5 (i) 1 4 size 12{ { { size 8{1} } over { size 8{4} } } } {}

(ii) 2 8 size 12{ { { size 8{2} } over { size 8{8} } } } {} / 1 4 size 12{ { { size 8{1} } over { size 8{4} } } } {}

(iii) 4 8 size 12{ { { size 8{4} } over { size 8{8} } } } {} / 1 2 size 12{ { { size 8{1} } over { size 8{2} } } } {}

(iv) 3 8 size 12{ { { size 8{3} } over { size 8{8} } } } {}

(v) 1 2 size 12{ { { size 8{1} } over { size 8{2} } } } {}

(vi) 1 8 size 12{ { { size 8{1} } over { size 8{8} } } } {}

(vii) 2 10 size 12{ { { size 8{2} } over { size 8{"10"} } } } {} / 1 5 size 12{ { { size 8{1} } over { size 8{5} } } } {}

(viii) 4 10 size 12{ { { size 8{4} } over { size 8{"10"} } } } {} / 2 5 size 12{ { { size 8{2} } over { size 8{5} } } } {}

(ix) 3 10 size 12{ { { size 8{3} } over { size 8{"10"} } } } {}

(x) 2 5 size 12{ { { size 8{2} } over { size 8{5} } } } {}

(xi) 1 5 size 12{ { { size 8{1} } over { size 8{5} } } } {}

ACTIVITY 2

1.

B 8 1 1 8 size 12{ { { size 8{1} } over { size 8{8} } } } {} 7 7 8 size 12{ { { size 8{7} } over { size 8{8} } } } {}
C 6 1 1 6 size 12{ { { size 8{1} } over { size 8{6} } } } {} 5 5 6 size 12{ { { size 8{5} } over { size 8{6} } } } {}
D 8 1 1 8 size 12{ { { size 8{1} } over { size 8{8} } } } {} 7 7 8 size 12{ { { size 8{7} } over { size 8{8} } } } {}
E 3 1 1 3 size 12{ { { size 8{1} } over { size 8{3} } } } {} 2 2 3 size 12{ { { size 8{2} } over { size 8{3} } } } {}
F 12 6 6 12 size 12{ { { size 8{6} } over { size 8{"12"} } } } {} / 1 2 size 12{ { { size 8{1} } over { size 8{2} } } } {} 6 6 12 size 12{ { { size 8{6} } over { size 8{"12"} } } } {} / 1 2 size 12{ { { size 8{1} } over { size 8{2} } } } {}
G 16 8 8 16 size 12{ { { size 8{8} } over { size 8{"16"} } } } {} / 1 2 size 12{ { { size 8{1} } over { size 8{2} } } } {} 8 8 16 size 12{ { { size 8{8} } over { size 8{"16"} } } } {} / 1 2 size 12{ { { size 8{1} } over { size 8{2} } } } {}
H 16 4 4 16 size 12{ { { size 8{4} } over { size 8{"16"} } } } {} / 1 4 size 12{ { { size 8{1} } over { size 8{4} } } } {} 12 12 16 size 12{ { { size 8{"12"} } over { size 8{"16"} } } } {} / 3 4 size 12{ { { size 8{3} } over { size 8{4} } } } {}
I 8 2 2 8 size 12{ { { size 8{2} } over { size 8{8} } } } {} / 1 4 size 12{ { { size 8{1} } over { size 8{4} } } } {} 6 6 8 size 12{ { { size 8{6} } over { size 8{8} } } } {} / 3 4 size 12{ { { size 8{3} } over { size 8{4} } } } {}
J 12 6 6 12 size 12{ { { size 8{6} } over { size 8{"12"} } } } {} / 1 2 size 12{ { { size 8{1} } over { size 8{2} } } } {} 6 6 12 size 12{ { { size 8{6} } over { size 8{"12"} } } } {} / 1 2 size 12{ { { size 8{1} } over { size 8{2} } } } {}
K 8 2 2 8 size 12{ { { size 8{2} } over { size 8{8} } } } {} / 1 4 size 12{ { { size 8{1} } over { size 8{4} } } } {} 6 6 8 size 12{ { { size 8{6} } over { size 8{8} } } } {} / 3 4 size 12{ { { size 8{3} } over { size 8{4} } } } {}

ACTIVITY 4

1.5 Fractions all equal

1.6 1 2 size 12{ { { size 8{1} } over { size 8{2} } } } {} = 2 4 size 12{ { { size 8{2} } over { size 8{4} } } } {} = 4 8 size 12{ { { size 8{4} } over { size 8{8} } } } {} = 8 16 size 12{ { { size 8{8} } over { size 8{"16"} } } } {}

2. 2.1 5 10 size 12{ { { size 8{5} } over { size 8{"10"} } } } {} 2.6 2 5 size 12{ { { size 8{2} } over { size 8{5} } } } {}

2.2 4 6 size 12{ { { size 8{4} } over { size 8{6} } } } {} 2.7 3 9 size 12{ { { size 8{3} } over { size 8{9} } } } {}

2.3 8 10 size 12{ { { size 8{8} } over { size 8{"10"} } } } {} 2.8 1 2 size 12{ { { size 8{1} } over { size 8{2} } } } {}

2.4 3 12 size 12{ { { size 8{3} } over { size 8{"12"} } } } {} 2.9 6 12 size 12{ { { size 8{6} } over { size 8{"12"} } } } {}

2.5 10 12 size 12{ { { size 8{"10"} } over { size 8{"12"} } } } {} 2.10 6 9 size 12{ { { size 8{6} } over { size 8{9} } } } {}

3. 3.1 12 21 size 12{ { { size 8{"12"} } over { size 8{21} } } } {} 3.4 15 18 size 12{ { { size 8{15} } over { size 8{"18"} } } } {}

3.2 14 16 size 12{ { { size 8{"14"} } over { size 8{16} } } } {} 3.5 9 10 size 12{ { { size 8{9} } over { size 8{"10"} } } } {}

3.3 4 5 size 12{ { { size 8{4} } over { size 8{5} } } } {} 3.6 21 27 size 12{ { { size 8{21} } over { size 8{"27"} } } } {}

4. 10 12 size 12{ { { size 8{"10"} } over { size 8{"12"} } } } {} = 5 6 size 12{ { { size 8{5} } over { size 8{6} } } } {} 2 3 size 12{ { { size 8{2} } over { size 8{3} } } } {} = 6 9 size 12{ { { size 8{6} } over { size 8{9} } } } {} 2 3 size 12{ { { size 8{2} } over { size 8{3} } } } {} = 4 6 size 12{ { { size 8{4} } over { size 8{6} } } } {}

3 4 size 12{ { { size 8{3} } over { size 8{4} } } } {} = 6 8 size 12{ { { size 8{6} } over { size 8{8} } } } {} 8 10 size 12{ { { size 8{8} } over { size 8{"10"} } } } {} = 4 5 size 12{ { { size 8{4} } over { size 8{5} } } } {} 3 10 size 12{ { { size 8{3} } over { size 8{"10"} } } } {} = 6 20 size 12{ { { size 8{6} } over { size 8{"20"} } } } {}

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
what are the products of Nano chemistry?
Maira Reply
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
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
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
Brian Reply
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?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
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 ?
Bob Reply
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?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
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
Smarajit Reply
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Source:  OpenStax, Mathematics grade 5. OpenStax CNX. Sep 23, 2009 Download for free at http://cnx.org/content/col10994/1.3
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