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Wiskunde

Vermenigvuldiging en deling

Deling

Opvoeders afdeling

Memorandum

420 ÷ 40 9,952
1 500 ÷ 50 28,358
4 440 ÷ 30 143,065
25 240 ÷ 40 573,545
68 440 ÷ 70 1052,877

Kopkrapper

x Deler met antwoord / getal voor die komma

Trek dié antwoord af van die deeltal

Leerders afdeling

Inhoud

Aktiwiteit:om ‘n reeks tegnieke te gebruik om berekeninge te doen [lu 1.10.2, lu 1.10.5]

1. Dit help baie om eers ’n antwoord te SKAT voordat jy die kwosiënt bereken. Werk saam met ’n maat deur die volgende voorbeelde:

2. Voltooi die volgende tabel op jou eie. Jy mag ’n sakrekenaar vir die antwoorde in die laaste kolom gebruik.

BEREKENING ROND AF GESKATTE ANTWOORD KORREKTE ANTWOORD
Bv. 87 ÷ 22 90 ÷ 20 4 4,5
2.1 418 ÷ 42 ............................ ............................ ............................
2.2 1 503 ÷ 53 ............................ ............................ ............................
2.3 4 435 ÷ 31 ............................ ............................ ............................
2.4 25 236 ÷ 44 ............................ ............................ ............................
2.5 68 437 ÷ 65 ............................ ............................ ............................

Het jy geweet?

In die som 77 ÷ 22 = 3,5 is die ,5 van die sakrekenaar NIE die res nie, maar slegs ’n desimale breuk!

,5 = 5 tiendes

77 ÷ 22 = 3 res 11

  • Kan jy sien dat ,5 nie gelyk is aan 11 nie?

KOPKRAPPER!

  • Hoe kan jy dan jou sakrekenaar gebruik om ’n heelgetal-res te vind?

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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 1.10: Dit is duidelik wanneer die leerder ‘n verskeidenheid tegnieke gebruik om sowel skriftelike as hoofberekeninge met heelgetalle te doen, insluitend:

1.10.2: langdeling;

1.10.5: gebruik van ‘n sakrekenaar.

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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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