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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.

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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

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b) 82 179 + 23 756

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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

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Nyibol Reply
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Muhammad Reply
what is errata
Muhammad
is the branch of biology that deals with the study of microorganisms.
Ntefuni Reply
What is microbiology
Mercy Reply
studies of microbes
Louisiaste
when we takee the specimen which lumbar,spin,
Ziyad Reply
How bacteria create energy to survive?
Muhamad Reply
Bacteria doesn't produce energy they are dependent upon their substrate in case of lack of nutrients they are able to make spores which helps them to sustain in harsh environments
_Adnan
But not all bacteria make spores, l mean Eukaryotic cells have Mitochondria which acts as powerhouse for them, since bacteria don't have it, what is the substitution for it?
Muhamad
they make spores
Louisiaste
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Aminu Reply
the significance of food webs for disease transmission
Abreham
food webs brings about an infection as an individual depends on number of diseased foods or carriers dully.
Mark
explain assimilatory nitrate reduction
Esinniobiwa Reply
Assimilatory nitrate reduction is a process that occurs in some microorganisms, such as bacteria and archaea, in which nitrate (NO3-) is reduced to nitrite (NO2-), and then further reduced to ammonia (NH3).
Elkana
This process is called assimilatory nitrate reduction because the nitrogen that is produced is incorporated in the cells of microorganisms where it can be used in the synthesis of amino acids and other nitrogen products
Elkana
Examples of thermophilic organisms
Shu Reply
Give Examples of thermophilic organisms
Shu
advantages of normal Flora to the host
Micheal Reply
Prevent foreign microbes to the host
Abubakar
they provide healthier benefits to their hosts
ayesha
They are friends to host only when Host immune system is strong and become enemies when the host immune system is weakened . very bad relationship!
Mark
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faisal Reply
cell is the smallest unit of life
Fauziya
cell is the smallest unit of life
Akanni
ok
Innocent
cell is the structural and functional unit of life
Hasan
is the fundamental units of Life
Musa
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Micheal Reply
There are nothing like emergency disease but there are some common medical emergency which can occur simultaneously like Bleeding,heart attack,Breathing difficulties,severe pain heart stock.Hope you will get my point .Have a nice day ❣️
_Adnan
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Innocent
I think infection prevention and control is the avoidance of all things we do that gives out break of infections and promotion of health practices that promote life
Lubega
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_Adnan
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Adama
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ESTHER Reply
Many sites of the body have it Skin Nasal cavity Oral cavity Gastro intestinal tract
Safaa
skin
Asiina
skin,Oral,Nasal,GIt
Sadik
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Micheal
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Shelly Reply
part of a tissue or an organ being wounded or bruised.
Wilfred
what term is used to name and classify microorganisms?
Micheal Reply
Binomial nomenclature
adeolu
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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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