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Wiskunde

Getalbegrip, optelling en aftrekking

Aftrekking

Opvoeders afdeling

Memorandum

1.1 378 767

1.2 366 269

1.3 613 751

Leerders afdeling

Inhoud

Aktiwiteit: 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. In die vorige aktiwiteit het julle sekerlik ‘n verskeidenheid van metodes gesien. Kom ons kyk na nog metodes om die verskil te bereken. Verdeel in groepe van drie. Lees die volgende probleem goed deur. Jou opvoeder sal julle groep nommer en sê na watter oplossing julle groep moet kyk. Bespreek dit en verduidelik dan vir die res van die klas hoe die antwoord bereken is:

As die aftrektal 631 524 is en die verskil 254 637, wat is die aftrekker?

1.1 Ek trek af deur terug te tel.

631 524 – 254 637

631 524 – 200 000

  • 431 524 – 50 000
  • 381 524 – 4 000
  • 77 524 – 600
  • 376 924 – 30
  • 376 894 - 7

= 376 887

Die aftrekker is 376 887.

1.2 Ek gebruik die kompensasiewet vir aftrekking.

631 524 – 254 637

+ 363 + 363

  • 631 887 – 255 000

+ 5 000 + 5 000

  • 636 887 – 260 000

376 887

  • Ek werk met negatiewe getalle en skryf dit so:

631 524
254 637
-3 (4 – 7)
-10 (20 – 30)
-100 (500 – 600)
-3 000 (1 000 – 4 000)
-20 000 (30 000 – 50 000)
400 000 (600 000 – 200 000)
376 887 (400 000 – 20 000 – 3 000 – 100 – 10 – 3)

1.4 ’n Baie kort manier om die aftrekker te bereken, is:

5 12 10 14 11 14

6 3 1 5 2 4

- 2 5 4 6 3 7

3 7 6 8 8 7

1.5. Kan julle groep aan ’n ander metode dink om die antwoord te bereken?

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2. Watter een van die bogenoemde metodes verkies JY?

_____________________________________________________________________

_____________________________________________________________________

Hoekom?

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

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Assessering

Leeruitkomste 1: Die leerder is in staat om getalle en hul verwantskappe te herken, te beskryf en voor te stel. Hulle kan ook met bekwaamheid en vertroue tel, skat, bereken en kontroleer tydens die oplos van probleme.

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 deur bespreking en vergelyking, die ekwivalensie van verskillende beskrywings van dieselfde verwantskap of reël wat soos volg voorgestel word, bepaal:

2.6.3: met getalsinne.

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 6. OpenStax CNX. Sep 15, 2009 Download for free at http://cnx.org/content/col11072/1.1
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