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Wiskunde

Graad 5

Gewone breuke en desimale breuke

Module 37

Om getalle te herken, te klassifiseer en voor te stel om hulle te beskryf en te vergelyk

Desimale Breuke

Aktiwiteit 1:

Om getalle te herken, te klassifiseer en voor te stel om hulle te beskryf en te vergelyk [lu 1.3.3]

Om ekwivalente vorms van getalle te herken en te gebruik [lu 1.5.2]

1. Jy het so pas ‘n leereenheid oor gewone breuke voltooi. Kom ons hersien.

Watter breukdeel van die volgende figure is ingekleur?

1.1

1.2

1.3

2. Kan jy jou antwoorde hierbo as desimale breuke skryf?

2.1

2.2

TIENDES

Verfris jou geheue!

Ons lees 0,3 as nul komma drie en ons noem dit ’n desimale breuk.

Die komma word die desimale teken genoem, en dit skei die heelgetalle van die breuke.

Onthou jy nog??

1 10 size 12{ { {1} over {"10"} } } {}

3. Kyk na die getallelyn en vul die ontbrekende getalle in.

4. Werk saam met ’n maat. Tel hardop en voltooi die volgende:

4.1 0,2 ; 0,4 ; 0,6 ; .............. ; .............. ; .............. ; .............. ; .............. ;

4.2 4,7 ; 4,5 ; 4,3 ; .............. ; .............. ; .............. ; .............. ; .............. ;

4.3 0,5 ; 1,5 ; .............. ; .............. ; .............. ; .............. ; .............. ;

4.4 3,6 ; 3,2 ; .............. ; .............. ; .............. ; .............. ; .............. ;

4.5 9,2 ; 9,1 ; .............. ; .............. ; .............. ; .............. ; .............. ;

Onthou jy nog?

As ek elke keer 0,3 by ’n vorige antwoord wil tel, kan ek my sakrekenaar so programmeer: Getal + 0,3 + = = =

Aktiwiteit 2:

Om ‘n reeks tegnieke te gebruik om hoofreken te doen [lu 1.10.5]

Jy weet nou al dat ons die sakrekenaar baie handig kan gebruik om antwoorde te vind of te kontroleer. Noudat jy weer gesien het hoe om jou sakrekenaar te programmeer om by te tel, probeer om die volgende aktiwiteit foutloos te voltooi. Programmeer jou sakrekenaar en skryf die eerste 10 antwoorde neer vir die volgende:

1.1 Begin by 3,7 en tel elke keer 0,6 by:

1.2 Begin by 9,3 en trek elke keer 0,4 af:

Aktiwiteit 3:

Om getalle te herken, te klassifiseer en voor te stel om hulle te beskryf en te vergelyk [lu 1.3.3]

Om ekwivalente vorms van getalle te herken en te gebruik [lu 1.5.2]

Om ‘n reeks tegnieke te gebruik om hoofreken te doen [lu 1.10.5]

In hierdie aktiwiteit wil ons kyk of jy kan sien watter gewone breuke (gemengde getalle) pas by watter desimale breuke. Dit is belangrik dat jy moet kan insien dat bv. 0,2 kg eintlik dieselfde is as 2 10 size 12{ { {2} over {"10"} } } {} kg!

1. Pas die gewone breuke by hul desimale breuke maats. Verbind kolom A met die korrekte antwoord in kolom B.

A B
Bv. 0,2 kg 1 5 10 size 12{ { {5} over {"10"} } } {} / 1 1 2 size 12{ { {1} over {2} } } {} km
1.1 0,5 m 152 7 10 size 12{ { {7} over {"10"} } } {} km
1.2 17,6 liter 2 10 size 12{ { {2} over {"10"} } } {} kg
1.3 8,4 sekondes 8 4 10 size 12{ { {4} over {"10"} } } {} sek
1.4 152,7 km 17 6 10 size 12{ { {6} over {"10"} } } {}
1.5 1,5 km 5 10 size 12{ { {5} over {"10"} } } {} / 1 2 size 12{ { {1} over {2} } } {} m

Uitdaging!

2. Werk saam met ’n maat. Kan julle die volgende breuke as desimale breuke skryf?

2.1 4 5 size 12{ { {4} over {5} } } {}

2.2 2 20 size 12{ { {2} over {"20"} } } {}

2.3 3 5 size 12{ { {3} over {5} } } {}

2.4 7 20 size 12{ { {7} over {"20"} } } {}

2.5 18 30 size 12{ { {"18"} over {"30"} } } {}

2.6 48 60 size 12{ { {"48"} over {"60"} } } {}

3. Kan julle verduidelik wat ons moet doen om bogenoemde antwoorde te kry?

4. Hoe kan jy jul antwoorde met ’n sakrekenaar kontroleer?

5. Gebruik nou ’n sakrekenaar en kontroleer jul antwoorde by no. 2.

Aktiwiteit 4:

Om hoofreken te kan doen [lu 1.9]

1. Jy het nou die geleentheid om jou hoofrekenvaardighede op te skerp en om jou “nuwe” kennis toe te pas. Voltooi die volgende hoofrekentoets so vinnig en akkuraat moontlik:

Questions & Answers

what is microbiology
Agebe Reply
What is a cell
Odelana Reply
what is cell
Mohammed
how does Neisseria cause meningitis
Nyibol Reply
what is microbiologist
Muhammad Reply
what is errata
Muhammad
is the branch of biology that deals with the study of microorganisms.
Ntefuni Reply
What is microbiology
Mercy Reply
studies of microbes
Louisiaste
when we takee the specimen which lumbar,spin,
Ziyad Reply
How bacteria create energy to survive?
Muhamad Reply
Bacteria doesn't produce energy they are dependent upon their substrate in case of lack of nutrients they are able to make spores which helps them to sustain in harsh environments
_Adnan
But not all bacteria make spores, l mean Eukaryotic cells have Mitochondria which acts as powerhouse for them, since bacteria don't have it, what is the substitution for it?
Muhamad
they make spores
Louisiaste
what is sporadic nd endemic, epidemic
Aminu Reply
the significance of food webs for disease transmission
Abreham
food webs brings about an infection as an individual depends on number of diseased foods or carriers dully.
Mark
explain assimilatory nitrate reduction
Esinniobiwa Reply
Assimilatory nitrate reduction is a process that occurs in some microorganisms, such as bacteria and archaea, in which nitrate (NO3-) is reduced to nitrite (NO2-), and then further reduced to ammonia (NH3).
Elkana
This process is called assimilatory nitrate reduction because the nitrogen that is produced is incorporated in the cells of microorganisms where it can be used in the synthesis of amino acids and other nitrogen products
Elkana
Examples of thermophilic organisms
Shu Reply
Give Examples of thermophilic organisms
Shu
advantages of normal Flora to the host
Micheal Reply
Prevent foreign microbes to the host
Abubakar
they provide healthier benefits to their hosts
ayesha
They are friends to host only when Host immune system is strong and become enemies when the host immune system is weakened . very bad relationship!
Mark
what is cell
faisal Reply
cell is the smallest unit of life
Fauziya
cell is the smallest unit of life
Akanni
ok
Innocent
cell is the structural and functional unit of life
Hasan
is the fundamental units of Life
Musa
what are emergency diseases
Micheal Reply
There are nothing like emergency disease but there are some common medical emergency which can occur simultaneously like Bleeding,heart attack,Breathing difficulties,severe pain heart stock.Hope you will get my point .Have a nice day ❣️
_Adnan
define infection ,prevention and control
Innocent
I think infection prevention and control is the avoidance of all things we do that gives out break of infections and promotion of health practices that promote life
Lubega
Heyy Lubega hussein where are u from?
_Adnan
en français
Adama
which site have a normal flora
ESTHER Reply
Many sites of the body have it Skin Nasal cavity Oral cavity Gastro intestinal tract
Safaa
skin
Asiina
skin,Oral,Nasal,GIt
Sadik
How can Commensal can Bacteria change into pathogen?
Sadik
How can Commensal Bacteria change into pathogen?
Sadik
all
Tesfaye
by fussion
Asiina
what are the advantages of normal Flora to the host
Micheal
what are the ways of control and prevention of nosocomial infection in the hospital
Micheal
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Source:  OpenStax, Wiskunde graad 5. OpenStax CNX. Sep 07, 2009 Download for free at http://cnx.org/content/col10993/1.1
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