# 0.2 To solve problems in context

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## Test 2

1. 1.1 Sum

1.2 Substraction

2. 2.1 True

• True

3. 2 382 + 12 018 = 14 400

4 214 + 45 116 = 49 330

= 63 730

4. 4.1 1 143 269

4.2 5 261 380 + 43 826

5.1 R13 + R54 + R8 + R130 = R205

5.2 R204,32

6. 7 637 261

7.1 8 035 933

7.2 8 621 704

## Activity: to solve problems in context [lo1.6.1]

** This is a task for your portfolio – do it without your pocket calculator! Be sure that you really understand what you have to do. Consider the assessment criteria before you start! Ask your educator for the paper that you will need:

1. Page through the local newspaper and find three advertisements that offer houses for sale. The prices should all be more than one million rand. Cut out the advertisements neatly and paste them on your sheet of paper. Calculate the combined price of the three houses.

2. Page through the newspaper again to find three examples of flats that are for sale. Also cut these out neatly and paste them on your paper. Calculate the combined price of the most expensive and the least expensive flats.

3. Now look for examples of three cars that are for sale. These must also be cut out and pasted neatly. Calculate the combined cost of the three cars.

4. Now select one house or flat and one car and calculate what you will have to pay for these items.

 Criteria 1 2 3 4 Neatness Cut out untidily. Badly pasted. Cut out untidily.Pasted. Cut out fairly neatly. Pasted reasonably neatly. Very neatly cut out and well glued. Completeness Hardly any of the instructions have been carried out. Only half of the instructions have been carried out. 1 or 2 instructions have not been carried out. All instructions have been completed. Correctness of calculations All calculations are incorrect. Many mistakes occur. Few mistakes occur. All answers are correctly calculated.

## Test

1. Fill in the missing words:

1.2 __________________________ is the inverse of addition. (2)

2. True / False:

2.1 27 more than 12 849 is 12 876.

2.2 869 213 is 9 100 more than 860 113. (2)

3. Calculate the answers to the following by grouping the numbers:

2 382 + 4 214 + 12 018 + 45 116

___________________ + ___________________ = ___________________

___________________ + ___________________ = ___________________

= ___________________ (5)

4. Fill in the missing numbers:

4.1 123 896 + 1 143 269 = ___________________ + 123 896

4.2 5 261 380 + (43 826 + 45 793) = (___________________ +

___________________) + 45 793 (3)

5. Nancy is shopping and packs the following items in her basket:

Mini tea cookies - R 12,69

Meat - R 54,29

Cheese - R 7,84

Frying pan - R129,50

5.1 Calculate how much money she needs by rounding off to the nearest rand.

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

(5)

5.2 Calculate the exact amount that she has to pay:

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

(2)

6. Ebrahim had to calculate the following: 4 167 809 + 3 469 452

He forgot to complete the sum. Now do it on his behalf:

4 1 6 7 8 0 9

+ 3 4 6 9 4 5 2

7 _ 3 _ _ 6 _ (2)

7. Calculate the following by using the shortest method possible:

7.1 4 138 269 + 3 897 664

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________ (2)

7.2 5 963 287 + 2 658 417

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________ (2)

• Complete by colouring in the appropriate block:

I am

to advance to the next Learning Unit.

## 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).

where we get a research paper on Nano chemistry....?
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
what are the products of Nano chemistry?
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
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
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
ya I also want to know the raman spectra
Bhagvanji
I only see partial conversation and what's the question here!
what about nanotechnology for water purification
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
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?
what is a peer
What is meant by 'nano scale'?
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 ?
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?
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
why we need to study biomolecules, molecular biology in nanotechnology?
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
why?
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
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