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

Wiskunde

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

differentiate between demand and supply giving examples
Lambiv Reply
differentiated between demand and supply using examples
Lambiv
what is labour ?
Lambiv
how will I do?
Venny Reply
how is the graph works?I don't fully understand
Rezat Reply
information
Eliyee
devaluation
Eliyee
t
WARKISA
hi guys good evening to all
Lambiv
multiple choice question
Aster Reply
appreciation
Eliyee
explain perfect market
Lindiwe Reply
In economics, a perfect market refers to a theoretical construct where all participants have perfect information, goods are homogenous, there are no barriers to entry or exit, and prices are determined solely by supply and demand. It's an idealized model used for analysis,
Ezea
What is ceteris paribus?
Shukri Reply
other things being equal
AI-Robot
When MP₁ becomes negative, TP start to decline. Extuples Suppose that the short-run production function of certain cut-flower firm is given by: Q=4KL-0.6K2 - 0.112 • Where is quantity of cut flower produced, I is labour input and K is fixed capital input (K-5). Determine the average product of lab
Kelo
Extuples Suppose that the short-run production function of certain cut-flower firm is given by: Q=4KL-0.6K2 - 0.112 • Where is quantity of cut flower produced, I is labour input and K is fixed capital input (K-5). Determine the average product of labour (APL) and marginal product of labour (MPL)
Kelo
yes,thank you
Shukri
Can I ask you other question?
Shukri
what is monopoly mean?
Habtamu Reply
What is different between quantity demand and demand?
Shukri Reply
Quantity demanded refers to the specific amount of a good or service that consumers are willing and able to purchase at a give price and within a specific time period. Demand, on the other hand, is a broader concept that encompasses the entire relationship between price and quantity demanded
Ezea
ok
Shukri
how do you save a country economic situation when it's falling apart
Lilia Reply
what is the difference between economic growth and development
Fiker Reply
Economic growth as an increase in the production and consumption of goods and services within an economy.but Economic development as a broader concept that encompasses not only economic growth but also social & human well being.
Shukri
production function means
Jabir
What do you think is more important to focus on when considering inequality ?
Abdisa Reply
any question about economics?
Awais Reply
sir...I just want to ask one question... Define the term contract curve? if you are free please help me to find this answer 🙏
Asui
it is a curve that we get after connecting the pareto optimal combinations of two consumers after their mutually beneficial trade offs
Awais
thank you so much 👍 sir
Asui
In economics, the contract curve refers to the set of points in an Edgeworth box diagram where both parties involved in a trade cannot be made better off without making one of them worse off. It represents the Pareto efficient allocations of goods between two individuals or entities, where neither p
Cornelius
In economics, the contract curve refers to the set of points in an Edgeworth box diagram where both parties involved in a trade cannot be made better off without making one of them worse off. It represents the Pareto efficient allocations of goods between two individuals or entities,
Cornelius
Suppose a consumer consuming two commodities X and Y has The following utility function u=X0.4 Y0.6. If the price of the X and Y are 2 and 3 respectively and income Constraint is birr 50. A,Calculate quantities of x and y which maximize utility. B,Calculate value of Lagrange multiplier. C,Calculate quantities of X and Y consumed with a given price. D,alculate optimum level of output .
Feyisa Reply
Answer
Feyisa
c
Jabir
the market for lemon has 10 potential consumers, each having an individual demand curve p=101-10Qi, where p is price in dollar's per cup and Qi is the number of cups demanded per week by the i th consumer.Find the market demand curve using algebra. Draw an individual demand curve and the market dema
Gsbwnw Reply
suppose the production function is given by ( L, K)=L¼K¾.assuming capital is fixed find APL and MPL. consider the following short run production function:Q=6L²-0.4L³ a) find the value of L that maximizes output b)find the value of L that maximizes marginal product
Abdureman
types of unemployment
Yomi Reply
What is the difference between perfect competition and monopolistic competition?
Mohammed
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

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