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Wiskunde

Getalbegrip, optelling en aftrekking

Optelling

Opvoeders afdeling

Memorandum

1.1 xi

1.2 xv

1.3 horlosies

2.

2.1 XLII

2.2 XCIX

2.3 MMDL

3.

3.1 608

3.2 65

3.3 3 257

4. Gaan verskil van jaar tot jaar

Kopkrapper

1. Skuif “minus” tot voor “x” sodat som lees 1 x 1 = 1

2.vat een by = weg en sit by – sodat som lees 1 = 111 – 11

Leerders afdeling

Inhoud

Aktiwiteit: om die skryfwyses van verskillende kulture te beskryf en te illustreer [lu 1.2]

  • Kan jy hieruit aflei hoe die Romeine 11 sou skryf?

_____________________________________________________________________

1.2 Hoe sou hulle 15 skryf?

_____________________________________________________________________

1.3 Waar word hierdie Romeinse syfers vandag nog gebruik?

_____________________________________________________________________

  • Kyk ook goed na die volgende:
Ons: 10 20 30 40 50 60 70 80 90 100
Romeine: X XX XXX XL L LX LXX LXXX XC C
Ons: 100 200 300 400 500 600 700 800 900 1 000
Romeine: C CC CCC CD D DC DCC DCCC CM M

2. Gebruik nou die bostaande inligting en bereken die volgende.Skryf jou antwoord in Romeinse syfers:

  • 40 + 2 ________________________________________________________

2.2 90 + 9 ________________________________________________________

2.3 2 000 + 500 + 50 _______________________________________________

3. Jy het nou so pas geoefen om soos die Romeine te skryf. Hieronder is nog ‘n paar voorbeelde van hoe hulle ‘n sekere getal sou skryf. Kan jy dit in gewone (ons) syfers skryf?

3.1 DCVIII ________________________________________________________

3.2 LXV ________________________________________________________

3.3 MMMCCLVII __________________________________________________

4. Kan jy ons huidige jaartal in Romeinse syfers skryf?

Kopkrapper!

Die volgende vuurhoutjies is in Romeinse syfers gepak, maar die antwoorde is verkeerd. Kan jy deur net EEN vuurhoutjie te skuif, die som “regmaak” sodat die antwoord korrek sal wees?

TYD VIR SELFASSESSERING

Beoordeel jouself op ‘n skaal 1 – 4 deur net ‘n sirkel te trek wat waar is van jou:

Ek kan Glad nie Soms Meeste van die tyd Altyd
my sakrekenaar se konstante funksie gebruik vir herhaalde optelling. 1 2 3 4
Romeinse syfers neerskryf vir ons syfers. 1 2 3 4
Optel en die antwoord in Romeinse syfers gee. 1 2 3 4
Romeinse syfers in gewone syfers skryf. 1 2 3 4

Die Romeinse telstelsel raak egter baie ingewikkeld. Die desimale stelsel wat ons gebruik, is meer prakties. Kom ons kyk nou na die verskillende maniere waarop ons kan optel.

ONTHOU JY NOG?

  • Die antwoord van ’n optelsom word die SOM VAN die twee getalle genoem.
  • Die INVERSE (omgekeerde) bewerking van optelling is AFTREKKING.

HET JY GEWEET?

Die volgorde waarin getalle opgetel word, maak geen verskil aan die antwoord nie!

Byvoorbeeld: 5 + 4 = 4 + 5
9 = 9
So ook: (16 + 14) + 12 = 16 + (14 + 12)
30 + 12 = 16 + 26
42 = 42

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 1.2: Dit is duidelik wanneer die leerder verskeie maniere beskryf en illustreer om getalle neer te skryf deur die geskiedenis heen in verskillende kulture (insluitend plaaslik).

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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