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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

find the 15th term of the geometric sequince whose first is 18 and last term of 387
Jerwin Reply
The given of f(x=x-2. then what is the value of this f(3) 5f(x+1)
virgelyn Reply
hmm well what is the answer
Abhi
how do they get the third part x = (32)5/4
kinnecy Reply
can someone help me with some logarithmic and exponential equations.
Jeffrey Reply
sure. what is your question?
ninjadapaul
20/(×-6^2)
Salomon
okay, so you have 6 raised to the power of 2. what is that part of your answer
ninjadapaul
I don't understand what the A with approx sign and the boxed x mean
ninjadapaul
it think it's written 20/(X-6)^2 so it's 20 divided by X-6 squared
Salomon
I'm not sure why it wrote it the other way
Salomon
I got X =-6
Salomon
ok. so take the square root of both sides, now you have plus or minus the square root of 20= x-6
ninjadapaul
oops. ignore that.
ninjadapaul
so you not have an equal sign anywhere in the original equation?
ninjadapaul
hmm
Abhi
is it a question of log
Abhi
🤔.
Abhi
Commplementary angles
Idrissa Reply
hello
Sherica
im all ears I need to learn
Sherica
right! what he said ⤴⤴⤴
Tamia
hii
Uday
what is a good calculator for all algebra; would a Casio fx 260 work with all algebra equations? please name the cheapest, thanks.
Kevin Reply
a perfect square v²+2v+_
Dearan Reply
kkk nice
Abdirahman Reply
algebra 2 Inequalities:If equation 2 = 0 it is an open set?
Kim Reply
or infinite solutions?
Kim
The answer is neither. The function, 2 = 0 cannot exist. Hence, the function is undefined.
Al
y=10×
Embra Reply
if |A| not equal to 0 and order of A is n prove that adj (adj A = |A|
Nancy Reply
rolling four fair dice and getting an even number an all four dice
ramon Reply
Kristine 2*2*2=8
Bridget Reply
Differences Between Laspeyres and Paasche Indices
Emedobi Reply
No. 7x -4y is simplified from 4x + (3y + 3x) -7y
Mary Reply
how do you translate this in Algebraic Expressions
linda Reply
Need to simplify the expresin. 3/7 (x+y)-1/7 (x-1)=
Crystal Reply
. After 3 months on a diet, Lisa had lost 12% of her original weight. She lost 21 pounds. What was Lisa's original weight?
Chris Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
Hello
Uday
I'm interested in Nanotube
Uday
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
Prasenjit
can nanotechnology change the direction of the face of the world
Prasenjit Reply
At high concentrations (>0.01 M), the relation between absorptivity coefficient and absorbance is no longer linear. This is due to the electrostatic interactions between the quantum dots in close proximity. If the concentration of the solution is high, another effect that is seen is the scattering of light from the large number of quantum dots. This assumption only works at low concentrations of the analyte. Presence of stray light.
Ali Reply
the Beer law works very well for dilute solutions but fails for very high concentrations. why?
bamidele Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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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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