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Pret met die sakrekenaar en negatiewe getalle

Opvoeders afdeling

Memorandum

10. a) 32 x 64 = M+

156 + MR = 2 204

  1. 244 ÷ 61 = M+

236 – MR = 232

11. -8 + (-1) + (9) = 0

-3 + 6 + (8) = -5

(6) + (-1) + -4 = 1

13. a) 27

b) 74

c) 39

d) 15

e) 51

f) 132

g) 9

h) 102

i) 41

j) 51

k) 4

l) 1 000

m) 3 800

n) 100

o) 21

14. a) Getal kleiner as 0

b) Hysbakke; temperature; diepte onder die see

15. a) Leerder se eie antwoord

  1. -1

-3

-5

c) 3; 0; -3; -6; -9; -12; -15; -18; -21; -24

16. a) -6

b) 8

c) 13

d) -14

Leerders afdeling

Inhoud

Aktiwiteit: pret met die sakrekenaar [lo 1.9.2]

10 UITDAGING

Gebruik nou jou sakrekenaar se geheuesleutels om die korrekte antwoorde te bepaal. Skryf neer wat jy sal insleutel:

a) 156 + 32 × 64

______________________________________________________________

_____________________________________________________________________

______________________________________________________________

_____________________________________________________________________

b) 236 – 244 ÷ 61

______________________________________________________________

_____________________________________________________________________

______________________________________________________________

___________________________________________________________________________________

11. KOPKRAPPER

Voltooi die volgende. Hou die korrekte volgorde van bewerkings in gedagte.

- 8 + + = 0
+ + +
- 3 + 6 + = - 5
+ + +
+ + - 4 = 1
= - 5 = = - 3

12. SELFASSESSERING

Merk af wat waar is van jou:

Ek kan ONSEKER REDELIK SEKER BAIE SEKER
iets omtrent die geskiedenis van optelmasjiene vertel.
die funksie van elke sleutel op my sakrekenaar verduidelik.
die volgorde van bewerkings korrek toepas.
my sakrekenaar se geheue-sleutels korrek gebruik om probleme op te los.

13. TYD VIR HOOFREKEN

Voltooi die volgende so vinnig en akkuraat moontlik:

a) 13 + 5 + 9 = ___________________

b) 12 + 28 + 34 = ___________________

c) 94 – 19 – 36 = ___________________

d) 78 – 35 – 28 = ___________________

e) 29 + ___________________ = 80

f) ___________________ ÷ 12 = 11

g) 63 ÷ ___________________ = 7

h) een agste van 816 = ___________________

i) (3 × 12) + 5 = ___________________

j) 3 × (12 + 5) = ___________________

k) 18 × ___________________. × 25 = 1 800

l) 56 × 5 × ___________________ = 56 000

m) 25 × 38 × 4 = ___________________

n) 1 400 ÷ ___________________ = 14

o) een kwart van 84 = ___________________

Hierdie keer het ek ___________________________________ reg.

14. KLASBESPREKING: NEGATIEWE GETALLE

Bespreek die volgende en vind antwoorde:

a) Wat is ’n negatiewe getal?

b) Waar gebruik ons negatiewe getalle in vandag se lewe?

c) Teken of plak voorbeelde hiervan uit tydskrifte, koerante, ens. in die onderstaande blok.

+ - 15. ONTHOU!

Om 5 op jou sakrekenaar in te sleutel, druk – 5 OF 5

a) Hoe dui JOU sakrekenaar negatiewe getalle aan? (Wat moet jy insleutel?)

b) Sleutel die getal 7 op jou sakrekenaar in. Trek 2 af. Trek weer 2 af.

Trek weer 2 af. Trek weer 2 af. Wat kry jy? .........................

Trek nog ’n keer 2 af. Skryf neer wat jy op jou vertoonvenster sien. ...............

Trek weer 2 af. Wat sê die sakrekenaar nou? .........................

+ - c) Gebruik jou sakrekenaar se konstante funksie en programmeer hom om vanaf 6 in -3’s te tel. (6 + 3 = = =) Skryf die eerste 10 antwoorde neer.

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

16. Doen die volgende met behulp van jou sakrekenaar. Onthou die volgorde van bewerkings! Jy mag ook jou sakrekenaar se geheue gebruik! Skryf alles neer wat jy insleutel om die antwoord te kry.

a) 13 – (11 + 8)

_____________________________________________________________________

_____________________________________________________________________

b) (-3) + 4 + (-2) + 9

_____________________________________________________________________

_____________________________________________________________________

c) -8 + 3 × (-5 + 12)

_____________________________________________________________________

_____________________________________________________________________

d) -2 + 8 – 6 + (-4) – 9 + 12 + (-13)

_____________________________________________________________________

_____________________________________________________________________

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 1.9: Dit is duidelik wanneer die leerder ‘n verskeidenheid tegnieke gebruik om berekeninge te doen, insluitend:

1.9.2: die gebruik van ‘n sakrekenaar.

Questions & Answers

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
what term is used to name and classify microorganisms?
Micheal Reply
Binomial nomenclature
adeolu
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Source:  OpenStax, Wiskunde graad 7. OpenStax CNX. Oct 21, 2009 Download for free at http://cnx.org/content/col11076/1.2
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