<< Chapter < Page
  Wiskunde graad 5   Page 1 / 1
Chapter >> Page >

Wiskunde

Getalbegrip, optelling en aftrekking

Optelling

Opvoeders afdeling

Memorandum

1.1 Aantel

1.2 Haal elke keer 11 400 uit en tel res by

1.3 Hou 1000e, 100e, 10e en ene apart en tel op

1.4 Aantel: eers 10 000e, dan 1 000e, dan 100e, dan 10e en dan ene

1.5 Self-verduidelikend

1.6 Oordra-metode

2. Eie antwoord

3.2 Kort optelmetode sonder hulpsyfers

3.3

a) 83 320

b) 105 935

Leerders afdeling

Inhoud

Aktiwiteit: om die gelykwaardigheid en geldigheid van verskillende voorstellings te bepaal [lu 2.6]

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

1. By Aktiwiteit 6 het julle jul eie tegnieke en strategieë gebruik om die probleme op te los. In jul terugvoering aan die klas het jul seker gesien dat daar talle maniere is waarop ons getalle bymekaar kan tel. Verdeel in ses groepe. Elke groep moet een van die volgende metodes bespreek en verduidelik hoe die antwoord bereken is.

HET JY GEWEET?

  • Daar is nog talle ander maniere waarop ons getalle bymekaar kan tel. Verdeel in 6 groepe. Elke groep moet een van die volgende metodes bespreek en verduidelik hoe die antwoord bereken is.

1.1 Ek bereken 11 468 + 23 957 so:

11 468 + 20 000 → 31 468 + 3 000 → 34 468 + 900

35 368 + 50 → 35 418 + 7 = 35 425

1.2 Ek verkies om die antwoord so te bereken:

11 468 + 23 957

= (11 400 + 11 400) + (68 + 12 557)

= (11 400 + 11 400 + 11 400) + (68 + 1 157)

= 34 200 + 1 225

= 35 425

1.3 Kyk mooi. Ek doen dit so:

1.4 My optelmetode lyk so:

11 468 + 23 957 =

10 000 + 20 000 → 30 000 + 1 000 + 3 000

34 000 + 400 + 900 → 35 300 + 60 + 50

35 410 + 8 + 7 = 35 425

1.5 Ek werk so:

1.6 Vir my is dit die maklikste om dit so neer te skryf:

11 468 + 23 957:

2. Watter metode is vir jou die maklikste? Motiveer jou antwoord.

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

3. Werk nou saam met ‘n maat en kyk goed na die volgende metode:

3.2 Verduidelik die metode vir ‘n ander maat.

3.3 Gebruik nou hierdie metode en bereken die som van die volgende:

a) 35 691 + 47 629

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

b) 82 179 + 23 756

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

Selfassessering

Kom ons kyk hoe het jy gevaar.

Merk die toepaslike blokkie:

Ek verstaan al die metodes. die meeste van die metodes. **net een of twee van die metodes.

** Vra jou groeplede / opvoeder om dit weer vir jou te verduidelik.

Kopkrapper

Werk in groepe van vier. Kan julle aan nog enige ANDER metodes dink om die som van 11 468 + 23 957 te bereken?

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

Leeruitkomste 2: Die leerder is in staat om patrone en verwantskappe te herken, te beskryf en voor te stel en probleme op te los deur algebraïese taal en vaardighede te gebruik.

Assesseringstandaard 2.6: Dit is duidelik wanneer die leerder bepaal, deur bespreking en vergelyking, die ekwivalensie van verskillende beskrywings van dieselfde verwantskap of reël wat soos volg voorgestel word:

2.6.1 woordeliks;

2.6.2 in vloeidiagramme;

2.6.3 met getalsinne.

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
hey
Giriraj
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
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get the best Algebra and trigonometry course in your pocket!





Source:  OpenStax, Wiskunde graad 5. OpenStax CNX. Sep 07, 2009 Download for free at http://cnx.org/content/col10993/1.1
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Wiskunde graad 5' conversation and receive update notifications?

Ask