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Wiskunde

Getalbegrip, optelling en aftrekking

Getalbegrip

Opvoeders afdeling

1.1 3 272 + 128 = 3 400

1 154 + 136 = 1 290

1 103 + 97 = 1 200

SOM = 5 890

1.2 138 + 622 = 760

259 + 11 011 = 11 270

235 + 25 = 4 260

SOM: = 16 290

2.1 Verkeerd: 640 + 360 + 5 + 2 – 2 = 1 005

2.2 Verkeerd: 2 500 + 360 = 2 880

KOPKRAPPER

1. 41 186 + 23 880 + 12 = 65 078

2. 758 817 + 100 + 118 200 – 4 = 875 113

Verskeie ander moontlikhede ook.

Leerders afdeling

Inhoud

Aktiwiteit: om te bereken deur bewerkings te kies wat geskik is om probleme op te los [lu 1.8.2]

Onthou jy nog?

Optelling is makliker wanneer ons getalle GROEPEER.

Kyk goed na die volgende voorbeeld:

37 + 28 + 12 + 16 + 13 + 44

As ons groepeer, lyk dit so: 37 + 13 = 50

28 + 12 = 40

44 + 16 = 60

SOM = 150

Het jy gesien? Ons groepeer die getalle so omdat ons tiene wil “volmaak”, want dis maklik om op te tel.

1. Groepeer nou die volgende getalle sodat jy makliker kan optel:

1.1 3 272 ; 1 154 ; 97 ; 128 ; 136 ; 1 103

_________________ + _________________ = _________________

_________________ + _________________ = _________________

_________________ + _________________ = _________________

SOM = _________________

1.2 138 ; 259 ; 4 235 ; 25 ; 11 011 ; 622

_________________ + _________________ = _________________

_________________ + _________________ = _________________

_________________ + _________________ = _________________

SOM = _________________

2. Werk saam met ’n maat en stel vas of die antwoorde van die volgende bewerkings korrek is. Indien nie, wys die fout uit.

2.1 638 + 367 = 640 + 360 – 5 = 995

2.2 2 496 + 364 = 2 600 + 360 = 2 960

Kopkrapper!

Jy moes die volgende voltooi met ’n sakrekenaar, maar jou sakrekenaar se 9 is stukkend! Hoe gaan jy die probleem oplos? Skryf alles neer wat jy sal insleutel en bereken die antwoord:

1. 41 186 + 23 892

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

2. 756 917 + 118 196

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

Tyd vir selfassessering!

Hoe het jy tot dusver gevaar? Gee vir ons ‘n aanduiding hoe jy voel oor die werk wat ons tot dusver afgehandel het. Maak net ‘n regmerkie in die toepaslike kolom:

Glad nie Redelik goed Goed Uitste-kend
Ek weet wat “som van” beteken. _______ _______ _______ _______
Ek kan die woord “inverse” verduidelik. _______ _______ _______ _______
Ek kan getalle groepeer om makliker op te tel. (LU1.8) _______ _______ _______ _______

Assessering

Leeruitkomste 1: Die leerder is in staat om getalle en hul verwantskappe te herken, te beskryf en voor te stel. Hulle kan ook met bekwaamheid en vertroue tel, skat, bereken en kontroleer tydens die oplos van probleme.

Assesseringstandaard 1.8: Dit is duidelik wanneer die leerder skat en bereken deur geskikte bewerkings vir die oplossing van probleme in verband met die volgende te kies en te gebruik:

1.8.2: optel en aftrek van heelgetalle.

Questions & Answers

marginal cost formula
Nandu Reply
you should differentiate the total cost function in order to get marginal cost function then you can get marginal cost from it
boniphace
formula of cross elasticity of demand
Theresia Reply
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Priyanka Reply
what is ceteris parabus
Priyanka
Ceteris paribus - Literally, "other things being equal"; usually used in economics to indicate that all variables except the ones specified are assumed not to change.
Abdullah
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scor
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scor
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kafui
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scor
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Frank
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owusu
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owusu
it's a summary of opportunity cost depicted on a curve.
okhiria
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Mannan
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igwe Reply
disaster management cycle
Gogul Reply
cooperate social responsibility
igwe
Fedric Wilson Taylor also define management as the act of knowing what to do and seeing that it is done in the best and cheapest way
OLANIYI
difference between microeconomics and macroeconomic
Ugyen Reply
microeconomics is the study of individual units, firm and government while macroeconomics is the study of the economic aggregates.
okhiria
The classical theory of full employment
Lovely
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Adzaho Reply
the situation that prevails when economic forces balance so that economic variables neither increase nor decrease
Bombey
what is equilibrium
Kabir
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salihu Reply
Economics is important because it helps people understand how a variety of factors work with and against each other to control how resources such as labor and capital get used, and how inflation, supply, demand, interest rates and other factors determine how much you pay for goods and services.
Muhammad
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Azeem Reply
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Abigailb
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ALIMAMY
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Agbor
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Amir
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Effah Reply
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Is the degree to the degree of responsiveness of a change in quantity supplied of goods to a change in price
Afran
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Humaira
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scor
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scor
the proces of using the services of labor and equipmnt together with other in puts to make goods and services availble
Bombey
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scor
Researchers demonstrated that the hippocampus functions in memory processing by creating lesions in the hippocampi of rats, which resulted in ________.
Mapo Reply
The formulation of new memories is sometimes called ________, and the process of bringing up old memories is called ________.
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Source:  OpenStax, Wiskunde graad 6. OpenStax CNX. Sep 15, 2009 Download for free at http://cnx.org/content/col11072/1.1
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