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Summary Graad 8_Wiskunde Notaboek

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Hierdie Graad 8 Wiskunde Algebra + Meetkunde Notaboek is 'n noodsaaklike hulpmiddel vir enige student wat wiskunde studeer! Dit bevat gedetailleerde notas en voorbeelde oor sleutelonderwerpe, insluitend algebra en meetkunde, om studente te help om die vak te verstaan ​​en te bemeester. Met sy duidelike en bondige formaat maak dit die leer en bemeestering van wiskundekonsepte makliker en doeltreffender. Dit bevat ook nuttige wenke en strategieë om studente te help om georganiseerd te bly en tred te hou met hul vordering. Hierdie notaboek is perfek vir studente, onderwysers en ouers

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September 5, 2021
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July 20, 2023
Number of pages
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WISKUNDE

, Grondbeginsels – kern begrippe
NATUURLIKE GETALLE
REËLE GETALLE
GETALLE “FAMILIE”/-STELSEL
Die getalle lyn bestaan uit al die Rasionale
Ewe getalle : : 2;4;6;8….
(Q) en Irrasionale (Q’) getalle wat saam die
versameling Reële (ℝ) getalle vorm Onewe getalle : 1;3;5;7…

NIE-REËLE GETALLE Priemgetalle : 2;3;5;7;11;13… (1 is nie n priemgetal
nie)
√−25 is ‘n voorbeeld van ‘n nie-reële getal.
Saamgestelde getalle: 4;6;8;9;10;12 (getalle met
Daar is geen getal wat, as dit gekwadreer meer as 2 faktore)
word, gelyk sal wees aan -25 nie.
Vierkants getalle ; 1;4;9;16;25…
√−25 bestaan nie op die getalle lyn nie. Die
reële en nie- reële getalle vorm gesamentlik Derdemagsgetalle : 1;8;27;64;125…
die komplekse getalle.
TELGETALLE



HEELGETALLE


RASIONALE GETALLE

enige getal wat as ‘n breuk geskryf kan word d.w.s ‘n
ℎ𝑒𝑒𝑙𝑔𝑒𝑡𝑎𝑙 𝐴
of [waar A & B ∈ Z ; B ≠ 0]
ℎ𝑒𝑒𝑙𝑔𝑒𝑡𝑎𝑙 𝐵

W Alle heelgetalle
W Alle breuke
W Alle eindigende desimale breuke
W Alle repeterende desimale breuke

IRRASIONALE GETALLE
W Alle nie-eindigende , nie-repeterende desimale
Kan slegs in ‘n getalvorm met oneindigende, nie- getalle
repeterende syfers na die desimale komma geskryf W Pi (π)
word, die getalle kan NIE AS ‘N BREUK geskryf word W √Positiewe nie − vierkant
3
NIE W √𝑃𝑜𝑠𝑖𝑡𝑖𝑒𝑤𝑒 𝑛𝑖𝑒 − 𝑘𝑢𝑏𝑖𝑒𝑘𝑒

, Grondbeginsels – kern begrippe
BODMAS - HVDVOA BEREKENINGE MET HAKKIES ()
NB ! By minus – en hakkies ()
Binne die hakkie (-3)² = (-3)(-3) =+9
Geen hakkie -3² =-(3)(3) = -9
Buite hakkie -(3)² =-(3)(3) = -9

BEREKENINGE MET WORTELS √
+ of – onder √ [VEREENVOUDIG eers onder die √]
W √16 + 9=√25
W √16 + 9≠√16 + √9
x of ÷ onder die √ [verdeel √ en werk elke deel se √
apart uit]
W √16 × 9=√144
TEKENREELS [X ÷] W √16 × 9=√16 × √9

, Grondbeginsels – kern begrippe
OPTEL + * AFTREK - KGV * GGD [BREUKE]
W Dieselfde tekens (tel op en behou die teken) KGV ( Kleinste Gemene Veelvoud )
W Verskillende tekens (trek af en behou die grootste getal
(OOK KGD = kleinste gemene deler)
se teken)
MAAL DIT WAT BY DIE GROOTSTE EEN VOORKOM EN DIT
Tekens binne en buite hakkies (maal met mekaar om nuwe
WAT KORT [BREUKE] (grootste getal se faktore en dit
teken te kry. Twee tekens langs mekaar moet een teken
wat oorbly by die ander)
word)
Bepaal die KGV van 9 en 12:
INVERSES
Veelvoude van 9 is: 9; 18; 27; 36; 45; 54; 63; …
optellingsinverse van -4 = 4
Veelvoude van 12 is: 12; 24; 36; 48; 60; 72; …
vermenigvuldigingsinverse van -2 = -½ Die KGV van 9 en 12 is: 36

VEELVOUDE * FAKTORE GGD/GGF ( Grootste gemene deler / faktor )
MAAL SLEGS DIT WAT BY ALMAL VOORKOM
VEELVOUDE
(getalle wat by almal voorkom)
[tel in die getal]
Bepaal die KGV van 8 en 10.
VB : 2, 4, 6, 8, 10 [VEELVOUDE VAN 2] Stap 1. Wat is die GGD van die 2 getalle: Dit is 2
FAKTORE Faktore van 8: 1; 2; 4; 8 Faktore van 10: 1; 2; 5; 10

[getalle wat presies in die getal kan indeel] Stap 2. Bepaal die produk van 8 en 10: 8 x 10 = 80

VB: 1, 2, 3, 6, 9, 18 [FAKTORE VAN 18] Stap 3. Deel die produk van die getalle deur die GGD: 80 ÷ 2 = 40

Stap 4. Die KGV van 8 en 10 is 40
PRIEMGETALLE
[getal met slegs 2 faktore naamlik 1 en die getal self]


[2, 3, 5, 7, 11, 13, 17, 19]
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