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BUDGET FOR A GRADE 4 BRAAI

INCOME ACTUAL INCOME
Money earned
EXPENDITURE Cost in R
FINAL TOTAL

Now remember to take the amount spent away from the “Income”. Is there enough

money for paper plates and cups?

Test your progress

Let’s have another look at how you’re coping.

1. Round off to the nearest:

Ten Hundred Thousand
1 387
925
4 813
6 492
9 509

2. In each sum, estimate the approximate answer by rounding off the numbers to the nearest hundred. You do not need to calculate the exact answer:

  • 7 462 + 2 948
  • 9 476 - 4 508

3. Money

  • How many 1c pieces are there in R50?
  • How many 5c pieces are there in R50?

4. Calculate, writing down all your steps clearly:

  • 5 907 + 3 754
  • 6 098 - 3 274
  • 1 234  768  630  266

CALCULATORS AND WORD SUMS

You may use your calculator to find the answers in this section.

5. Read this sum carefully and answer the questions. Write down some proof to show how you reached each answer.

A professional gardener, Mr Gouws, prunes 765 rose-bushes in July. Mr Greg prunes 648 rose-bushes in the same month. In the first week of the next month Mr Gouws prunes another 165 bushes, while Mr Greg prunes another 261 bushes. Then in the second week of August Mr Greg prunes 87 more bushes while Mr Gouws prunes 184 bushes.

  • In July how many more bushes did Mr Gouws prune than Mr Greg ?
  • At the end of the first week in August was Mr Greg catching up to Mr Gouws? Give reasons to support your answer.
  • Altogether, who pruned the most rose-bushes?
  • How many bushes did both men prune altogether?

Assessment

Learning outcomes(LOs)
LO 1
Numbers, Operations and RelationshipsThe 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 standards(ASs)
We know this when the learner:
1.6 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, and simple budgets).

Memorandum

ACTIVITY

1. MONEY MATTERS

  • 500 cent 1.2 5 000 cent 1.3 20 five-cent pieces

1.4 200 five-cent pieces1.5 2 000 five-cent pieces 1.6 10 ten-cent pieces 1.7 1 000 ten-cent pieces 1.8 2 fifty-cent pieces 1.9 20 fifty-cent pieces 1.10 40 fifty-cent pieces

2. SHOPPING FOR STATIONERY

2.1(a) R20 (b) R63 (c) R18 (d) R33 (e) R39 2.2 R173

3.1 It saves time; yes.

3.2

Notes AndCoins R78,76 AmountsR30,45 of changeR43,62 to beR21,94 R120,13 R0,55
R100 1
R50 1
R20 1 1 2 1 1
R10 1
R5 1
R2 1 1
R1 1 1 1
50c 1 1 1 1
20c 1 2 2
10c 1 1 1
5c 1 1 1 1 1

3.3 Remember, change is rounded off upwards , so if the change to be given is R78,76, the customer is given R78,80

4. AT SCHOOL

4.1 15

5. BUDGETS

5.1 GROUP WORK – AN INVESTIGATION - own answers

5.2 (a) own answer (b) own answer (c) own answer (d) own answer

Test your progress

1. Rounding off to the nearest:

10 100 1 000
1 387 1 390 1 400 1 000
925 930 900 1 000
4 813 4 810 4 800 5 000
6 492 6490 6 500 6 000
9 509 9 510 9 500 10 000

2.1 10 400 2.2 3 900

3.1 5 000 3.2 1 000

4.1 9 661 4.2 2 824 4.3 2 898

5with calculators – word sums

5.1 17 More 5.2 Yes; 910 – 909 5.3 Mr. Gouws 5.4 2 090

Questions & Answers

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
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
NANO
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
Privacy Information Security Software Version 1.1a
Good
Read about ancient clocks like_ hour glass, water clock and sun dial for a quiz and hand on Activity in the class
Neha Reply

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Source:  OpenStax, Mathematics grade 4. OpenStax CNX. Sep 18, 2009 Download for free at http://cnx.org/content/col11101/1.1
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