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• GETSenPhaseMaths

This collection is included inLens: Siyavula: Mathematics (Gr. 7-9)
By: Siyavula

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Inside Collection (Course):

Course by: Siyavula Uploaders. E-mail the author

# Breuke - Gemengde Bewerkings

Module by: Siyavula Uploaders. E-mail the author

## Memorandum

24.1 ( )

or

÷

x

+

_

• (i) = 7272 size 12{ { { size 8{7} } over { size 8{2} } } } {} x 307307 size 12{ { { size 8{"30"} } over { size 8{7} } } } {} - 10

= 2101421014 size 12{ { { size 8{"210"} } over { size 8{"14"} } } } {} - 10

= 15 – 10

s = 5

1. (i) = 32 - 11 3434 size 12{ { { size 8{3} } over { size 8{4} } } } {}

v = 20 1414 size 12{ { { size 8{1} } over { size 8{4} } } } {}

1. (i) = 234234 size 12{ { { size 8{"23"} } over { size 8{4} } } } {} x 4747 size 12{ { { size 8{4} } over { size 8{7} } } } {}

= 237237 size 12{ { { size 8{"23"} } over { size 8{7} } } } {}

p = 3 2727 size 12{ { { size 8{2} } over { size 8{7} } } } {}

26. a) Metode: Kanselleer uit

Antwoord: 1818 size 12{ { { size 8{1} } over { size 8{8} } } } {}

b) 125125 size 12{ { { size 8{1} } over { size 8{"25"} } } } {}

## Inhoud

### AKTIWITEIT: Gemengde bewerkings [LU 1.10]

24. GEMENGDE BEWERKINGS

24.1 Onthou jy nog?

• Skryf gou die volgorde van bewerkings hier neer:

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24.2 Pas dit nou toe in die volgende:

(i) s=312×42723of15s=312×42723of15 size 12{s=3 { { size 8{1} } over { size 8{2} } } times 4 { { size 8{2} } over { size 8{7} } } - { { size 8{2} } over { size 8{3} } } "of""15"} {}

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(ii) v=12of64712+414v=12of64712+414 size 12{v= { { size 8{1} } over { size 8{2} } } "of""64" - left (7 { { size 8{1} } over { size 8{2} } } +4 { { size 8{1} } over { size 8{4} } } right )} {}

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(iii) p=534÷318134p=534÷318134 size 12{p=5 { { size 8{3} } over { size 8{4} } } div left (3 { { size 8{1} } over { size 8{8} } } - 1 { { size 8{3} } over { size 8{4} } } right )} {}

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25. Tyd vir selfassessering

26. KOPKRAPPERS!

a) Wat sal die antwoord van die volgende wees? Probeer dit kry sonder ellelange bewerkings!

o = 1 1 2 × 1 1 3 × 1 1 4 × 1 1 5 × 1 1 6 × 1 1 7 × 1 1 8 o = 1 1 2 × 1 1 3 × 1 1 4 × 1 1 5 × 1 1 6 × 1 1 7 × 1 1 8 size 12{o= left (1 - { { size 8{1} } over { size 8{2} } } right ) times left (1 - { { size 8{1} } over { size 8{3} } } right ) times left (1 - { { size 8{1} } over { size 8{4} } } right ) times left (1 - { { size 8{1} } over { size 8{5} } } right ) times left (1 - { { size 8{1} } over { size 8{6} } } right ) times left (1 - { { size 8{1} } over { size 8{7} } } right ) times left (1 - { { size 8{1} } over { size 8{8} } } right )} {}

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b) As jy so sou aanhou met die patroon tot by . . . 11251125 size 12{ times left (1 - { { size 8{1} } over { size 8{"25"} } } right )} {}, wat sal die antwoord dan wees?

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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 strategieë gebruik om oplossings te kontroleer en die redelikheid daarvan te beoordeel.

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