# 4.1 Calculations  (Page 2/2)

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The shapes should preferably be duplicated on manilla, but if this is not available, use ordinary paper.

## Activity: calculations [lo 1.6, lo 1.8, lo 4.6, lo 5.5]

• Here is the poster that Bonny made to attract the people to their stalls.

• Calculate the costs:

Mary bought: 3 pancakes, 1 hotdog and 2 cool drinks.

She paid _____________________________________________________________

Terry bought: 2 hamburgers, 2 candy floss and 2 fruit juices.

He paid ____________________________________________________________

Mom bought: 4 hotdogs, 4 puddings and 4 ice creams.

She paid _____________________________________________________________

The twins bought: 4 pancakes, 2 fruit juices en 2 candy floss.

They paid __________________________________________________________

They planned to make 300 hamburgers . They will sell at R5 each. 10 meatballs can be made from 1 kg of mince. The mince is packed in 5 kg - packs .

• Complete the table:
 packs of mince 1 2 3 4 kg 5 10 meat balls 50 100 R____ altogether 250 500
• How many 5 kg-packs must they buy? ________packs.
• If 1 kg of mince is needed for 10 meatballs, how many grams are needed for each meatball?________________________________________________

The sausages for the hotdogs were packed in 3 kg-packs. Each 3 kg-pack is enough for 25 hotdogs . They bought 8 such packs. The hotdogs will be sold at R3 each.

• Complete the table:
 packs of sausage 1 2 3 4 5 6 7 8 kg 3 6 9 hotdogs 25 50 R____ altogether 75 150
• How many hotdogs will they make? _________________ hotdogs.
• How much money will the hamburgers and the hotdogs bring in?

_____________________________________________________________________

• What is the difference between the amount of money made from the hamburgers and that from the hotdogs? ______________________________

Tommy decided to help Dad with the pony rides. Here is the track that they measured off on the rugby field.

• What is the perimeter of the track?

One ride takes the pony twice around the track. It takes the pony 5 minutes to go round twice and to have a short rest.

• What distance will the pony cover for each ride?
• How many rides can the pony do in 1 hour?
• They are going to pay R5 per ride. How much money will they make if 50 children have pony rides?
• Who can calculate how far the pony will have walked altogether?
• Here is Tommy’s poster.

Calculate how much some children paid for the fun.

• Bonny had 2 pony rides and 1 turn on the jumping castle.

She paid ___________________________________________________

• Tommy had 3 turns to shoot the air gun and 1 pony ride.

He paid ___________________________________________________

• Terry threw the balls twice and had 1 pillow fight.

She paid ___________________________________________________

• Shane did everything once .

He paid ___________________________________________________

• Robert did everything twice .

He paid ___________________________________________________

• How much will you pay if you do everything 5 times?

_____________________________________________________________________

## 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 money problems involving totals and change in rands and cents, including converting between rands and cents;

Assessment Standard 1.8: We know this when the learner can perform calculations, using appropriate symbols, to solve problems;

Learning Outcome 4: The learner will be able to use appropriate measuring units, instruments and formulae in a variety of contexts.

Assessment Standard 4.6: We know this when the learner investigates (alone and/or as a member of a group or team) and approximates;

Learning Outcome 5: The learner will be able to collect, summarise, display and critically analyse data in order to draw conclusions and make predictions, and to interpret and determine chance variation.

Assessment Standard 5.5: We know this when the learner reads and interprets data presented in simple tables and lists.

what does nano mean?
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?
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
it is a goid question and i want to know the answer as well
Maciej
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
what is fullerene does it is used to make bukky balls
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
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
so some one know about replacing silicon atom with phosphorous in semiconductors device?
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 ?
for screen printed electrodes ?
SUYASH
What is lattice structure?
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
what's the easiest and fastest way to the synthesize AgNP?
China
Cied
types of nano material
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.
what is nano technology
what is system testing?
preparation of nanomaterial
how did you get the value of 2000N.What calculations are needed to arrive at it
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