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Mathematics

Number concept

Educator section

Memorandum

1.1 12 November 2001

5 November 2001

1.2 R94,98

1.3 10

1.4 14%

14%

1.5 maps

Cash

1.6 Anneke

1.7 R25,00

1.8 820:14

15:30

  • Cashier 101
  • No payment

2. R9 + R12 + R9 + R4 + R2 + R4 = R40

3.1 1 litre full cream milk

  • kg chicken pieces
  • litre Coke

410 g Surf maid peas

200 g Niknaks

5 litre Vanilla ice cream

1 Sasko Sam bread

3.2 Prices will vary from shop to shop

3.3 Calculate according to prices in 3.2

3.4 Calculate according to prices in 3.3

Leaner section

Content

Activity: to solve problems in context [lo 1.6.1]

When we buy something in a shop we receive a cash slip. We need to be able to understand and “read” the slip. If not, we will not be able to check if it really reflects what we have bought and paid for. Look at the following examples:

1. Study the above examples and then answer the following questions:

1.1 When were the purchases made at

Pick ’n Pay? ____________________________________________________

Ranch Meat Centre? _____________________________________________

1.2 What does the biltong cost per kg? __________________________________

1.3 How many items were bought from Pick ’n Pay? _______________________

1.4 What % tax had to be paid at

Pick ’n Pay? ____________________________________________________

Ranch Meat Centre? _____________________________________________

1.5 How (with what) did the client pay at

Pick ’n Pay? ___________________________________________________

Ranch Meat Centre? _____________________________________________

1.6 Who was the cashier at Ranch Meat Centre? __________________________

1.7 What amount did the customer give her? _____________________________

1.8 At what time were the purchases made at

Pick ’n Pay? ____________________________________________________

Ranch Meat Centre? _____________________________________________

1.9 If your purchases are not according to the slip, how will you know which cashier helped you at Pick a Pay if you cannot remember what he/she looked like?

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

1.10 What does the * next to a few of the amounts on the Pick ’n Pay slip mean?

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

Do you still remember?

Explain to a friend how we round off to the nearest 10, 100 and 1 000.

** Can you explain how we would round off to the nearest 10 000?

2. When we go shopping, we can estimate to the nearest rand whether we will have enough money to pay.

Look at the following slip. Round off to the nearest rand and estimate how much you will have to pay for your shopping.

LAMB
0.360 Kg @ R25.98 / Kg
R9.35 _____________
LAMB
0.444 Kg @ R25.98 / Kg
R11.54 _____________
SWEET CORN R8.79 _____________
SQUASH
1.295 Kg @ R3.29 / Kg
R4.26 _____________
SWEET POTATOES
0.686 Kg @ R2.99 / Kg
R2.05 _____________
GOOD MORNING H R3.79 _____________
COOKED HAM
0.288 Kg @ R44.95 / Kg
R12.95 _____________

3. Confused Cathy’s shopping list is completely wrong!

3.1 Write the shopping list down correctly.

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

3.2 Find out what each item will cost at your nearest supermarket and write it down.

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

3.3 Use your calculator and calculate what this shopping will cost you.

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

3.4 If you pay with a R100 note, how much change will you get?

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

Do you still remember?

Your calculator has a memory that you can use to do calculations with more than

one operation correctly.

M+ : enables the calculator to save or memorise the answer

MR / RCM : these keys are pressed if you want to retrieve the memorised answers

e.g. (347 219 + 34 987) + (296 553 + 1 897 320)

Key in 347 219 + 34 987 = M+

Then key in 296 553 + 1 897 320 = M+

Then key in MR or RCM

Assessment

Learning Outcome 1: The learner will be able to recognise, describe and represent numbers and their relationships, and to count, estimate, calculate and check with competence and confidence in solving problems.

Assessment Standard 1.6: We know this when the learner solves problems in context including contexts that may be used to build awareness of other Learning Areas, as well as human rights, social, economic and environmental issues such as:

1.6.1: financial (including buying and selling, profit and loss, simple budgets, reading and interpreting accounts, and discount).

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
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
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
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
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
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Source:  OpenStax, Mathematics grade 6. OpenStax CNX. Sep 10, 2009 Download for free at http://cnx.org/content/col11030/1.1
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