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Wiskunde

Graad 4

Heelgetalle en hul verwantskappe

Module 4

Finansiële probleme en die opstel van eenvoudige begrotings

Aktiwiteit 1:

Probleemoplossing in konteks, insluitend ekonomiese en omgewingsake soos finansiële probleme en die opstel van eenvoudige begrotings [LU 1.6.1]

1. GELDSAKE

Jy het gedurende die Grondslagfase ontdek hoeveel 1-sente, 2-sente, 5-sente, ens. daar in R1 is. Wys nou hoe knap jy is!

Vraag Antwoord
1.1 Hoeveel sente in R5? ________________sent
1.2 Hoeveel sente in R50? _______________sent
1.3 Hoeveel 5-sentstukke in R1? ____________vyfsentstukke
1.4 Hoeveel 5-sentstukke in 10? ______________vyfsentstukke
1.5 Hoeveel 5-sentstukke in R100? ____________vyfsentstukke
1.6 Hoeveel 10-sentstukke in R1? ____________tiensentstukke
1.7 Hoeveel 10-sentstukke in R100? ___________tiensentstukke
1.8 Hoeveel 50-sentstukke in R1? ____________vyftigsentstukke
1.9 Hoeveel 50-sentstukke in R10? ____________vyftigsentstukke
1.10 Hoeveel 50-sentstukke in R20? ____________vyftigsentstukke

Baie winkels maak nie meer gebruik van 1c-stukke nie.

2. AANKOOP VAN SKRYFBEHOEFTES

Voor die skole aan die begin van die jaar begin het, moes jy by die supermark inkopies doen. Hier volg die pryse van verskillende items:

Potloodskerpmaker R5 Filtpenne (Kleur) R10

Gomstafie R4 Meetkundestel R20

Skryfboek R3 "Flip file" R10

Potloodkryt (klein dosie) R14 2 potlode R8

Pen (rolpunt) R15 Skryfblok R6

Sakrekenaar R49 Skêr R7

Dagboek R15 Liniaal R5

Uitveër R6

2.1 Hoeveel altesaam sou elke kind die kassier moes betaal, indien hulle die volgende items gekoop het:

  1. Jani het ‘n dagboek en ‘n liniaal gekoop.
  2. Andries het ‘n sakrekenaar, ‘n skryfblok en twee potlode gekoop.
  3. Hettie het ‘n stel potloodkryt en ‘n gomstokkie gekoop.
  4. Mandi het ‘n pen, ‘n liniaal, ‘n uitveër en ‘n potloodskerpmaker gekoop.
  5. Brian het ‘n skryfboek, ‘n dagboek, ‘n skryfblok en ‘n pen gekoop.
  6. 2.2 Hoeveel het al die kinders saam op skryfbehoeftes spandeer?

3. GELD IN WINKELS

3.1 In groot winkels sluit die pryse van items ook sente in. Die kassiere vergeet nieteenstaande maar van die een- en tweesente. Die kassiere bereken altyd jou kleingeld na die volgende vyfsent. Indien jy dus 17 sent behoort te kry, gee hulle vir jou 20 sent. Kleingeld word altyd “op bereken”, dit is anders as afronding. Hoekom dink jy dat winkels hierdie reëling het? Verloor winkels baie geld hierdeur? Bespreek dit eers met jou maats en skryf daarna jou antwoord neer.

3.2 Maak asof jy as ‘n kassier in ‘n winkel werk. Die kasregister sê vir jou hoeveel geld jy vir elke klant moet gee, maar jy moet besluit watter banknote en muntstukke jy uitkeer. Jy moet die kleinste hoeveelheid moontlik in banknote en muntstukke uitkeer.

Voltooi nou die volgende tabel (die eerste een is reeds vir jou gedoen):

Banknote en muntstukke Hoeveelheid kleingeld wat uitgekeer word:R78,76 - R 30,45 - R 43,62 - R 21,94 - R120,13 - R0,55
R100
R50 1
R20 1
R10
R5 1
R2 1
R1 1
50c 1
20c 1
10c 1
5c

3.3 Onthou dat die kleingeld boontoe afgerond word; dis nie altyd die bedrag wat die klant betaal nie. Wat kry die klant werklik as die kleingeld op R78,76 te staan kom?

Questions & Answers

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
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
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
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Wiskunde graad 4. OpenStax CNX. Sep 18, 2009 Download for free at http://cnx.org/content/col11100/1.1
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