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Wiskunde

Persentasies

Opvoeders afdeling

Memorandum

MODULETOETS 6

1. a) 5% b) 12%

  1. 73, 3 . size 12{ {3} cSup { size 8{ "." } } } {} %

2. a) 2 25 size 12{ { { size 8{2} } over { size 8{"25"} } } } {} b) 9 20 size 12{ { { size 8{9} } over { size 8{"20"} } } } {}

3. 0,5; 1 4 size 12{ { { size 8{1} } over { size 8{4} } } } {} ; 1 5 size 12{ { { size 8{1} } over { size 8{5} } } } {} ; 15%

4. a) R70

  1. R58,50

5. 42%

6. R297,50

7. R36,29 (afgerond)

8. 20%

9. AFSLAG X 100

MERKPRYS 1

Leerders afdeling

Inhoud

Aktiwiteit: navorsingstaak en moduletoets [lu 1.5, lu 2.6, lu 5.9]

25. ’n Groter uitdaging!

Doen die volgende as ’n aparte navorsingstaak op folio deur jou opvoeder voorsien (of gebruik jou eie papier). Onthou om mooi netjies te werk!

a) Jy gaan ’n winkel open. Besluit self watter soort.

b) Doen marknavorsing en verskaf ’n lys van items wat jy gaan aankoop vir jou winkel (kies net 5!)

Meld ’n realistiese kosprys by elke item.

c) Voeg nou 14% BTW by by elke item en lys dit in ’n tabel, bv.

Item Kosprys Met BTW

d) Besluit waarvoor jy elke item gaan verkoop. Gee ’n duidelike uiteensetting van jou kosprys en verkooppprys deur middel van ’n lyngrafiek.

(Wenk: gebruik verskillende kleure)

e) Bereken nou hoeveel % wins jy op elke item gaan maak, bv.

Item %Wins

f) Maak ’n advertensie om jou winkel bekend te stel.

g) Werk nou ’n maandelikse begroting uit vir jou winkel – hoeveel geld jy nodig het om alles glad te laat verloop en waarvoor.

(Wenk: dink aan die water en ligte, telefoon, werknemers, ens.)

1. Skryf die volgende as %:

a) 0,05 : ......................... b) 3 25 size 12{ { { size 8{3} } over { size 8{"25"} } } } {} : ......................... (2)

c) 11 15 size 12{ { { size 8{"11"} } over { size 8{"15"} } } } {} : ......................... (2)

2. Skryf as ’n gewone breuk en vereenvoudig:

a) 8% : ......................... b) 45% : .........................

......................... ......................... (4)

3. Rangskik van groot na klein:

1 5 size 12{ { { size 8{1} } over { size 8{5} } } } {} ; 15% ; 0,5 ; 1 4 size 12{ { { size 8{1} } over { size 8{4} } } } {}

(2)

4. Bereken:

a) 20% van R350

(2)

b) 12 1 2 size 12{ { { size 8{1} } over { size 8{2} } } } {} % van R468

(2)

5. Watter % is 840 g van 2 kg?

(4)

6. Ek kry 15% afslag op ’n paar skoene wat R350 gemerk is. Hoeveel moet ek vir die skoene betaal?

(4)

7. Die prys van kaas wat tans R32,99 ’n kg is, gaan binnekort met 10% verhoog word. Wat sal die nuwe prys van die kaas wees?

(4)

8. ’n Meubelhandelaar koop ’n sitkamerstel vir R12 000 en verkoop dit vir R15 000. Hoeveel % wins het hy gemaak?

(2)

9. Skryf die formule vir % afslag neer.

(2)

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 1.5: Dit is duidelik wanneer die leerder probleme in konteks oplos, insluitend kontekste wat gebruik kan word om ‘n bewustheid van ander leerareas, asook van menseregte-, sosiale, ekeonomiese en omgewingsake, te bevorder;

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 ‘n situasie beskryf deur ‘n grafiek daarvan te interpreteer, of ‘n grafiek van ‘n beskrywing van ‘n situasie teken (bv. die hoogte van ‘n wipwaentjie oor tyd; die spoed van ‘n resiesmotor wat om ‘n baan beweeg);

Leeruitkomste 5: Die leerder is in staat om data te versamel, op te som, voor te stel en krities te ontleed om gevolgtrekkings en voorspellings te maak en om toevallige variasie te interpreteer en te bepaal.

Assesseringstandaard 5.9: Dit is duidelik wanneer die leerder data wat op verskeie maniere voorgestel is krities lees en interpreteer ten einde gevolgtrekkings en voorspellings te maak.

Questions & Answers

are nano particles real
Missy Reply
yeah
Joseph
Hello, if I study Physics teacher in bachelor, can I study Nanotechnology in master?
Lale Reply
no can't
Lohitha
where we get a research paper on Nano chemistry....?
Maira Reply
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
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
has a lot of application modern world
Kamaluddeen
yes
narayan
what is variations in raman spectra for nanomaterials
Jyoti Reply
ya I also want to know the raman spectra
Bhagvanji
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
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Wiskunde graad 7. OpenStax CNX. Oct 21, 2009 Download for free at http://cnx.org/content/col11076/1.2
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