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Wiskunde

Getalbegrip, optelling en aftrekking

Optelling

Opvoeders afdeling

Memorandum

Leerders afdeling

Inhoud

Aktiwiteit: om probleme in konteks op te los [lu 1.6]

Om ‘n reeks tegnieke te gebruik om berekeninge te doen [lu 1.10]

Om strategieë te gebruik om oplossings te kontroleer [lu 1.11]

1. Ons het nou na ‘n paar tegnieke gekyk om antwoorde te bereken. In ons alledaagse lewe kry ons daagliks met “probleme” soos diè hieronder te doen. As ons dit nie kan oplos nie, sal ons bitter min berekeninge met vertroue kan doen. Deel in groepe van drie en kyk of julle die volgende probleme kan oplos. Jou opvoeder sal jul van die nodige folio voorsien.

1.1 Dimitri en sy vriende besluit om by die “Bites-and-Bits” restaurant te gaan eet.

Die spyskaart lyk so:

Toebroodjies:

Kaas R9,99Ham en Kaas R12,99Eier R11,99Tamatie, ham en kaas R15,99Hoender R15,99

Koeldrank: Coke, Fanta, Sprite, Cream Soda R4,95

Melkskommel: Aarbei, Piesang, Sjokolade R8,95

  • Dimitri bestel ‘n ham-en-kaastoebroodjie en ‘n aarbei melkskommel.
  • Vusi bestel ‘n hoendertoebroodjie en ‘n Coke.
  • Nancy bestel ‘n eiertoebroodjie en ‘n sjokolade melkskommel.
  • As Dimitri aanbied om die rekening te betaal, wat gaan die uiteet hom kos?

1.2 Mnr. Zuma, hoof van die Laerskool Vasbyt, besluit om die saal se vloer met nuwe teëls te vervang. Hy koop dit en vra die leerders om dit saal toe te dra.

  • Die Graad 7’s dra 1 893 teëls; die Graad 6’e bring 976 teëls; die Graad 5’s dra 824 teëls en die Graad 4’s bring 769 teëls na die saal. Hoeveel teëls is altesaam na die saal gedra?

2. Verduidelik aan die res van die klas hoe julle groep die antwoorde bereken het.

3. Vergelyk jul metodes. Hoe verskil hulle van mekaar?

4. Gebruik ‘n sakrekenaar om die antwoorde te kontroleer.

Assessering

Leeruitkomste 1: Die leerder is in staat om getalle en die verwantskappe daarvan te herken, te beskryf en voor te stel, en om tydens probleemoplossing bevoeg en met selfvertroue te tel, te skat, te bereken en te kontroleer.

Assesseringstandaard 1.6: Dit is duidelik wanneer die leerder probleme in konteks oplos, insluitend kontekste wat gebruik kan word om ‘n bewustheid van ander leerareas, asook van menseregte-, sosiale, ekonomiese en omgewingskwessies, te bevorder:

1.6.1 finansiële kontekste (insluitend koop en verkoop, wins en verlies, en eenvoudige begrotings);

Assesseringstandaard 1.10: Dit is duidelik wanneer die leerder ‘n verskeidenheid tegnieke gebruik om sowel skriftelike as hoofberekeninge met heelgetalle te doen, insluitend:

1.10.1 optelling en aftrekking in kolomme;

Assesseringstandaard 1.11: Dit is duidelik wanneer die leerder ‘n verskeidenheid strategieë gebruik om oplossings te kontroleer en die redelikheid van oplossings te beoordeel.

Questions & Answers

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
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
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
hi
Loga
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
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Source:  OpenStax, Wiskunde graad 5. OpenStax CNX. Sep 07, 2009 Download for free at http://cnx.org/content/col10993/1.1
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