1. Home
  2. Wiskunde graad 7
  3. Kwartaal 3
  4. Deling deur veelvoude van 10

3.6 Deling deur veelvoude van 10

<< Chapter < Page
  Wiskunde graad 7   Page 1 / 1
Chapter >> Page >

Wiskunde

Desimale breuke

Opvoeders afdeling

Memorandum

23.4.2 a) 0,041

  1. 0,81
  2. 0,0093
  • b en c

23.6 a) 1,234

  1. 0,845
  2. 7,23

25. a) R51

  1. R211,59
  2. 21160c
  3. R2,90
  4. Ja

Koste per oproep: R1,77

  1. 91,5
  2. R102,13
  3. R1,28 x 24 = R30,72
  4. R3,27
  5. Eie antwoord

Leerders afdeling

Inhoud

Aktiwiteit: deling deur veelvoude van 10 [lu 1.5.1, lu 1.7.5]

23.4 DELING DEUR VEELVOUDE VAN 10

23.4.1 Onthou jy nog?

a) As ek 0,8 deur 40 moet deel, doen ek dit so:

0,8 ÷ 40 = (0,8 ÷ 10) ÷ 4

= 0,08 ÷ 4

= 0,02

b) As ek 4,2 deur 600 moet deel, sê ek:

4,2 ÷ 600 = (4,2 ÷ 100) ÷ 6

= 0,042 ÷ 6

= 0,007

23.4.2 Bereken die volgende sonder ’n sakrekenaar:

a) j = 3,28 ÷ 80

…………………………………………………………………………………………..

…………………………………………………………………………………………..

b) d = 567 ÷ 700

…………………………………………………………………………………………..

…………………………………………………………………………………………..

c) g = 18,6 ÷ 2 000

…………………………………………………………………………………………..

…………………………………………………………………………………………..

23.5 DELING DEUR DESIMALE BREUKE

23.5.1 Werk saam met ’n maat deur die volgende voorbeelde:

’n Rol materiaal is 11,25 m lank. Om een rok te maak, word 1,5 m materiaal benodig. Hoeveel rokke kan uit die rol materiaal gesny word?

a) Ek moet 11,25 ÷ 1,5 bereken.Ek verander die desimale getalle eers na breuke :

11 , 25 = 11 25 100 = 11 1 4 size 12{"11","25"="11" { { size 8{"25"} } over { size 8{"100"} } } ="11" { { size 8{1} } over { size 8{4} } } } {} en 1,5 = 1 5 10 = 1 1 2 size 12{1,5=1 { { size 8{5} } over { size 8{"10"} } } =1 { { size 8{1} } over { size 8{2} } } } {}

11 1 4 ÷ 1 1 2 = 45 4 ÷ 3 2 45 4 × 2 3 7 1 2 alignl { stack { size 12{"11" { { size 8{1} } over { size 8{4} } } div 1 { { size 8{1} } over { size 8{2} } } = { { size 8{"45"} } over { size 8{4} } } div { { size 8{3} } over { size 8{2} } } } {} #= { { size 8{"45"} } over { size 8{4} } } times { { size 8{2} } over { size 8{3} } } {} # =7 { { size 8{1} } over { size 8{2} } } {}} } {}

Ek maak gebruik van ekwivalente breuke :

11 , 25 ÷ 1,5 = 11 , 25 1,5 × 10 10 = 112 , 5 15 7,5 7 1 2 alignl { stack { size 12{"11","25" div 1,5= { { size 8{"11","25"} } over { size 8{1,5} } } times { { size 8{"10"} } over { size 8{"10"} } } = { { size 8{"112",5} } over { size 8{"15"} } } } {} #=7,5 {} # =7 { { size 8{1} } over { size 8{2} } } ` {}} } {}

c) Ek moet 11,25 ÷ 1,5 bereken.Ek wil die deler na ’n heelgetal verander sodat ek makliker kan deel.

1,5 × 10 = 15

Nou moet ek net die deeltal ook met 10 vermenigvuldig!

11,25 × 10 = 112,5

Die antwoord is dus 7,5 rokke.

23.5.2 Watter van die bogenoemde metodes is eintlik presies dieselfde?

…………………………………………………………………………………………..

…………………………………………………………………………………………..

23.6 Bereken die volgende deur eers die deler na ’n heelgetal te verander:

a) q = 0,88848 ÷ 0,72

…………………………………………………………………………………………..

…………………………………………………………………………………………..

…………………………………………………………………………………………..

…………………………………………………………………………………………..

b) p = 0,14365 ÷ 0,17

…………………………………………………………………………………………..

…………………………………………………………………………………………..

…………………………………………………………………………………………..

…………………………………………………………………………………………..

c) v = 0,30366 ÷ 0,042

…………………………………………………………………………………………..

…………………………………………………………………………………………..

…………………………………………………………………………………………..

…………………………………………………………………………………………..

24. Tyd vir selfassessering

  • Merk die toepaslike blokkie met ’n regmerkie:
 JA NEE
Ek kan desimale breuke korrek deur 10 deel
Ek kan desimale breuke korrek deur 100 deel
Ek kan desimale breuke korrek deur 1 000 deel
Ek weet hoe om desimale breuke deur veelvoude van 10 te deel
Ek kan desimale breuke korrek deur desimale breuke deel

25. Kyk na die volgende telefoonrekening en beantwoord dan die vrae. Jy mag jou sakrekenaar gebruik.

a) Rond die koste van die oorsese oproep af tot die naaste rand. ………………..

b) Wat was die totale koste van die oproepe wat gemaak is? ……………………

c) Rond bogenoemde antwoord af tot die naaste sent. …………………………

d) What was the average cost of each cell phone (Vodacom) call? ………………

e) Is MTN goedkoper as Vodacom? ......................... Motiveer.

…………………………………………………………………………………………..

f) Rond die koste van die nasionale oproepe (0 – 50 km) af tot 1 syfer na die desimale teken.

…………………………………………………………………………………………..

g) Wat is die totale koste van die nasionale oproepe? ……………………………

h) As twee “ShareCall” oproepe R1,28 kos, wat sal 48 sulke oproepe kos?

…………………………………………………………………………………………..

i) Die rekening word betaal met ’n R200-noot en ‘n R20-noot. Hoeveel kleingeld moet jy kry?

…………………………………………………………………………………………..

j) Wat is JULLE telefoonrekening gemiddeld per maand oor ‘n tydperk van een jaar?

…………………………………………………………………………………………..

Assessering

Leeruitkomste 1: Die leerder is in staat om getalle en die verwantskappe daarvan te herken, te beskryf en voor te stel, en om tydens probleemoplossing bevoeg en met selfvertroue te tel, te skat, te bereken en te kontroleer.

Assesseringstandaard 1.5: Dit is duidelik wanneer die leerder probleme in konteks oplos, insluitend kontekste wat gebruik kan word om ‘n bewustheid van ander leerareas, asook van menseregte-, sosiale, ekonomiese en omgewingsake, te bevorder, soos:

1.5.1 finansiële kontekste (insluitend wins en verlies, begrotings, rekeninge, lenings, enkelvoudige rente, huurkoop, wisselkoerse);

Assesseringstandaard 1.7: Dit is duidelik wanneer die leerder skat en bereken deur geskikte bewerkings vir probleme wat die volgende behels, te kies en te gebruik:

1.7.5 deling van positiewe desimale getalle van minstens 3 desimale plekke deur heelgetalle.

Questions & Answers

What is a cell
Odelana Reply
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
what is inflammation
Shelly Reply
part of a tissue or an organ being wounded or bruised.
Wilfred
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply
<< Chapter < Page Page > Chapter >>

Read also:

Get Jobilize Job Search Mobile App in your pocket Now!

Get it on Google Play Download on the App Store Now




Source:  OpenStax, Wiskunde graad 7. OpenStax CNX. Oct 21, 2009 Download for free at http://cnx.org/content/col11076/1.2
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Wiskunde graad 7' conversation and receive update notifications?

Ask