# 4.1 Calculations  (Page 2/2)

 Page 2 / 2

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.

#### Questions & Answers

are nano particles real
yeah
Joseph
Hello, if I study Physics teacher in bachelor, can I study Nanotechnology in master?
no can't
Lohitha
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
has a lot of application modern world
Kamaluddeen
yes
narayan
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
how did you get the value of 2000N.What calculations are needed to arrive at it
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