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Wiskunde

Getalbegrip, optelling en aftrekking

Aftrekking

Opvoeders afdeling

Memorandum

Eie opinie

TOETS TOTAAL: 20

1. (a) Verskil

(b) Optelling

(c) Aftrektal

2. (a) 105; 70;

(b) 480; 360;

4. 46 – 000 – 23 000 = 23 000

5. 1 450

6. 23 600 + 400 = 24 000

24 000 + 32 123 = 56 123

32 123 + 400 + 31 = 32 554

7.

8. R500 000 – R13 401

R486 599

Leerders afdeling

Inhoud

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

UITDAGING

Hierdie is ‘n taak vir jou portefeulje. Jou opvoeder sal dit met jou deurgaan en vir jou verduidelik presies wat van jou verwag word. Maak seker dat jy goed verstaan voordat jy begin. Onthou om netjies te werk.

  • Uitdaging!

Jy het ‘n kompetisie gewen en is ’n miljoen rand ryker! Jy mag egter net items / artikels uit jou plaaslike koerant daarmee koop. Knip dit wat jy sal koop uit, en plak dit in die blok hieronder (met die pryse). Dui aan hoeveel geld jy sal oorhou. Vra ’n maat om jou berekeninge te kontroleer.

ASSESSERING

1 2 3 4
Netheid en organisasie Werk is slordig en ongeorganiseerd Georganiseerd, maar moeilik leesbaar Netjies en georganiseerd, maklik leesbaar Netjiese, duidelik uiteengesette werk; duidelik leesbaar
Logiese redenering Baie min bewyse van logika Bietjie logika kom na vore Gebruik effektiewe wiskundige redenering Gebruik verfynde logika en redenasie
Korrektheid van berekenings Antwoord is verkeerd bereken (items uitgelaat) Enkele foute is begaan Voldoende begrip, maar aftrekfout begaan Antwoord korrek bereken

Toets

1. Skryf die korrekte antwoorde neer:

1.1 Die antwoord van ‘n minus-som word die ______________________ genoem

1.2 Die inverse van aftrekking is _______________________

1.3 In die som 5 676 – 231 = 5 445 word 5 676 die ______________ genoem (3)

2. Voltooi die volgende getallepatrone:

2.1 175 ; 140 ; 105; _______________________; 35

2.2 _______________________; _______________________; 240 ; 120 (2)

3. Voltooi die volgende vloeidiagram:

(2)

4. Bereken die verskil deur beide getalle af te rond tot die naaste 1 000:

4.1 45 679 – 23 499

__________________________________________________________________ (3)

5. Voltooi:

6 775 – 1 448 = 6 777 - ______________________________________________ (1)

6. Seko moes die volgende bereken: 56 123 – 23 569. Hy het so begin:

  • Voltooi die som.

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_______________________________________________________________ (3)

7. Nomsa het vergeet om haar som te voltooi. Doen dit vir haar:

(4)

8. Mnr. Muruvan het R500 000 gehad. Nadat hy ‘n huis kontant gekoop het, het hy R13 401 oorgehad. Wat het sy huis gekos?

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_______________________________________________________________ (4)

TOTAAL: 20

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).

Questions & Answers

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
what is biological synthesis of nanoparticles
Sanket Reply
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 5. OpenStax CNX. Sep 07, 2009 Download for free at http://cnx.org/content/col10993/1.1
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