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8 x 6 = 6 x ____

23 x ____ = 13 x 23

124 x 85 = ____ x 124

2. Is die volgende waar of onwaar?

2.1 6 × 3 × 4 = 3 × 4 × 6 = 4 × 6 × 3

2.2 (2 × 4) × 5 = (5 × 4) × 2 = 4 × (2 × 5)

3. Watter afleiding kan jy maak uit bogenoemde voorbeelde?

Aktiwiteit 8:

Om te skat en te bereken deur middel van afronding [lu 1.8.1]

1. Om antwoorde te kan skat, is ‘n belangrike vaardigheid. As jy goed kan skat, sal jy makliker agterkom wanneer jy moontlik ‘n fout met jou berekeninge kon begaan het. Rond eers die volgende getalle af en skat so wat die produk van die volgende sal wees:

SOM SKATTING SAKREKENAAR VERSKIL
Bv. 19 × 21 400 399 1
a) 38 × 27 ......................... ......................... .........................
b) 99 × 146 ......................... ......................... .........................
c) 45 × 69 ......................... ......................... .........................
d) 998 × 78 ......................... ......................... .........................
e) 409 × 18 ......................... ......................... .........................

Kopkrappers!

a) Watter twee getalle kleiner as 10 het elk 3 faktore?

________ en _________

b) Kleur die korrekte blokkie in:

Die produk van enige 2 onewe getalle is altyd ’n EWE ONEWE getal.

c) Watter twee getalle het ’n produk van 48 en ’n som van 16?

________ en _________

Aktiwiteit 9:

Om probleme in konteks te kan oplos [lu 1.6.1]

Om ‘n reeks tegnieke te gebruik om berekeninge te doen [lu 1.10]

Kom ons hou ‘n vinnige dinkskrum! Jou opvoeder sal jul van die nodige folio voorsien.

1. Deel in groepe van drie en maak so vinnig soos jul kan ‘n lys van al die vervoermiddels wat daar in ons land is.

2. Watter een van bogenoemde kies jy om in te reis? Hoekom?

3. Waar is jou gunsteling sitplek in ‘n:

  1. motor?
  2. skoolbus?
  3. boot?
  4. vliegtuig?

4. Kyk of jy nou al die volgende probleme kan oplos:

Mnre. Slobo, Mugathle en Sisala het elkeen ‘n splinternuwe taxi gekoop om passasiers mee te vervoer. Vir die eerste rit lyk hul planne so:

Eienaar Bedrag per rit per persoon Aantal passasiers km gereis
Slobo R15,80 13 76
Mugathle R14,60 14 84
Sisala R16,25 12 59
  • Wie het die meeste geld gemaak met die eerste rit?
  • As die petrol R1,05 vir elke kilometer wat gereis is, gekos het, wat was mnr. Mugathle se petrolrekening?
  • As almal in mnr. Slobo se taxi atlete was en terug moes draf, hoe ver het hul altesaam gedraf?
  • Verduidelik aan die res van die klas hoe julle groep die antwoorde bereken het.
  • Vergelyk jul metodes. Hoe verskil hulle van mekaar?
  • Gebruik ‘n sakrekenaar om die antwoorde te kontroleer.

Aktiwiteit 10:

Om die gelykwaardigheid en geldigheid van verskillende voorstellings te bepaal [lu 2.6.3]

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

1. By Aktiwiteit 9 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 kan vermenigvuldig. Verdeel in groepe van drie. Lees die volgende probleem en kyk dan of julle al die verskillende oplossings verstaan.

’n Saal moet vol stoele gepak word. Daar moet 23 rye met 16 stoele in elke ry wees. Hoeveel stoele moet uitgepak word?

Questions & Answers

Discuss the differences between taste and flavor, including how other sensory inputs contribute to our  perception of flavor.
John Reply
taste refers to your understanding of the flavor . while flavor one The other hand is refers to sort of just a blend things.
Faith
While taste primarily relies on our taste buds, flavor involves a complex interplay between taste and aroma
Kamara
which drugs can we use for ulcers
Ummi Reply
omeprazole
Kamara
what
Renee
what is this
Renee
is a drug
Kamara
of anti-ulcer
Kamara
Omeprazole Cimetidine / Tagament For the complicated once ulcer - kit
Patrick
what is the function of lymphatic system
Nency Reply
Not really sure
Eli
to drain extracellular fluid all over the body.
asegid
The lymphatic system plays several crucial roles in the human body, functioning as a key component of the immune system and contributing to the maintenance of fluid balance. Its main functions include: 1. Immune Response: The lymphatic system produces and transports lymphocytes, which are a type of
asegid
to transport fluids fats proteins and lymphocytes to the blood stream as lymph
Adama
what is anatomy
Oyindarmola Reply
Anatomy is the identification and description of the structures of living things
Kamara
what's the difference between anatomy and physiology
Oyerinde Reply
Anatomy is the study of the structure of the body, while physiology is the study of the function of the body. Anatomy looks at the body's organs and systems, while physiology looks at how those organs and systems work together to keep the body functioning.
AI-Robot
what is enzymes all about?
Mohammed Reply
Enzymes are proteins that help speed up chemical reactions in our bodies. Enzymes are essential for digestion, liver function and much more. Too much or too little of a certain enzyme can cause health problems
Kamara
yes
Prince
how does the stomach protect itself from the damaging effects of HCl
Wulku Reply
little girl okay how does the stomach protect itself from the damaging effect of HCL
Wulku
it is because of the enzyme that the stomach produce that help the stomach from the damaging effect of HCL
Kamara
function of digestive system
Ali Reply
function of digestive
Ali
the diagram of the lungs
Adaeze Reply
what is the normal body temperature
Diya Reply
37 degrees selcius
Xolo
37°c
Stephanie
please why 37 degree selcius normal temperature
Mark
36.5
Simon
37°c
Iyogho
the normal temperature is 37°c or 98.6 °Fahrenheit is important for maintaining the homeostasis in the body the body regular this temperature through the process called thermoregulation which involves brain skin muscle and other organ working together to maintain stable internal temperature
Stephanie
37A c
Wulku
what is anaemia
Diya Reply
anaemia is the decrease in RBC count hemoglobin count and PVC count
Eniola
what is the pH of the vagina
Diya Reply
how does Lysin attack pathogens
Diya
acid
Mary
I information on anatomy position and digestive system and there enzyme
Elisha Reply
anatomy of the female external genitalia
Muhammad Reply
Organ Systems Of The Human Body (Continued) Organ Systems Of The Human Body (Continued)
Theophilus Reply
what's lochia albra
Kizito
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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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