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4. We know that there are 1 000 mm in 1 m

Thus: 2 347 mm = 2 m 347 mm= 2,347 m

Complete the table:

mm m
e.g. 4 328 4,328
..................... 3
367 .....................
..................... 4,7
28 .....................
..................... 0,067
6 .....................

5. In the same way 1 000 m = 1 km

Thus: 1 407 m = 1 km 407 m= 1,407 km

Complete the table:

Distance in m 2 368 ............ 426 ............ 38 ............ 9
Distance in km 2,368 7 ............ 0,6 ............ 1,48 ............

Activity 3:

  • To measure two-dimensional figures [LO 4.5.3]

To use standard units to record [lo 4.5.3]



When we draw something, e.g. a house, we don’t draw it as big as it actually is.

We draw it to scale. The shape stays the same but the size is different (smaller). The knife below is drawn on a scale of 1:4

Now think about maps. Normally a place will be drawn much smaller than it actually is in reality. A scale tells us how to measure distances on a map. In the map below 1 cm equals 500 km.

1. Answer the following questions:

1.1 What is the actual length of the knife above? 1_____


  1. What is the actual distance, according to the scale, from town

A to town B?....................

  1. And from C to D?....................

2. Determine the scale of each item below:

2.1 The actual length of the crayon is 15 cm.

Scale: .........................................

2.2 The actual length of the bottle is 80 cm.

Scale: .........................................

2.3 The actual length of the fish is 45 cm.

Scale: .........................................

  • Now measure the distance. _____ mm
  • How many cm is it?
  • How many m is it?

Now take any 340 mℓ cool drink tin and measure the distance around it in mm.


LO 4
MeasurementThe learner will be able to use appropriate measuring units, instruments and formulae in a variety of contexts.
We know this when the learner:
4.1 reads, tells and writes analogue, digital and 24-hour time to at least the nearest minute and second;
4.2 solves problems involving calculation and conversion between appropriate time units including decades, centuries and millennia;
4.3 uses time-measuring instruments to appropriate levels of precision including watches and stopwatches;
4.4 describes and illustrates ways of representing time in different cultures throughout history;
4.5 estimates, measures, records, compares and orders two-dimensional shapes and three-dimensional objects using S.I. units with appropriate precision for:
  • mass using grams (g) en kilograms (kg);
  • capacity using millimetres (mm), centimetres (cm), metres (m) en kilometres (km);
  • length using. millimetres (mm), centimetres (cm), metres (m) en kilometres (km);
4.6 solves problems involving selecting, calculating with and converting between appropriate S.I. units listed above, integrating appropriate contexts for Technology and Natural Sciences;
4.7 uses appropriate measuring instruments (with understanding of their limitations) to appropriate levels of precision including:
  • bathroom scales, kitchen scales and balances to measure mass;
  • measuring jugs to measure capacity;
  • rulers, metre sticks, tape measures and trundle wheels to measure length.



3. tape measure / metre stick / trundle / ruler / string / wool

Activity 2

1. 1.1: cm

1.2: m

1.3: m

1.4: mm

1.5: km

1.6: m

2. 2.1: 2 m

2.2: 26 cm

2.3: 674 km


42 179 1463
8,5 24,5 102,6


mm m
3 000
4 700


7 000 600 1 480
0,426 0,038 0,009


1. 20 cm

1.1: 1 250 km

1.2: 1 500 km

2. 2.1: 1:5

2.2: 1:20

2.3: 1:15

Questions & Answers

what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
scanning tunneling microscope
how nano science is used for hydrophobicity
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
what is differents between GO and RGO?
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
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
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
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
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.
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
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
characteristics of micro business
for teaching engĺish at school how nano technology help us
How can I make nanorobot?
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
how can I make nanorobot?
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
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.
what is the actual application of fullerenes nowadays?
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.
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 5. OpenStax CNX. Sep 23, 2009 Download for free at http://cnx.org/content/col10994/1.3
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