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1.29 Vermenigvuldiging

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Wiskunde

Graad 5

Vermenigvuldiging en deling

Module 30

Vermenigvuldiging

Vermenigvuldiging

Aktiwiteit 1:

Om die veelvoude van enkelsyfergetalle te herken en voor te stel [lu 1.3.6]

Ek dink jy weet reeds hoe belangrik dit is om jou tafels goed te ken! In hierdie leereenheid sal dit jou help om sommer vinnig en korrek te vermenigvuldig. Kom ons kyk hoe goed ken jy jou tafels.

1. Haal die vrugtelekkers met die korrekte antwoorde uit die fles. Kleur hulle netjies in en skryf dan die letter van die alfabet wat daarop is neer. Vul so die ontbrekende woord in:

________________is ’n korter manier om herhaalde optelling te doen.

1.1 5 × 4

1.2 2 × 3

1.3 7 × 7

1.4 7 × 4

1.5 5 × 5

1.6 7 × 3

1.7 6 × 4

1.8 9 × 2

1.9 9 × 7

1.10 9 × 9

1.11 7 × 6

1.12 3 × 5

1.13 8 × 8

1.14 12 × 4

1.15 6 × 12

1.16 9 × 12

1.17 6 × 6

Aktiwiteit 2:

Om die faktore van minstens enige tweesyferheelgetal te herken en voor te stel [lu 1.3.7]

  1. Noudat jy presies weet wat “faktore” is, kan jy seker hul belangrikste funksie in vermenigvuldiging sien. Faktore help ons ook om ons antwoorde te toets wanneer ons vermenigvuldig. Ja, jy is reg! Ons gebruik dit om mee te deel wanneer ons wil toets of ons korrek vermenigvuldig het. Kyk nou hoeveel faktorpare jy vir die volgende getalle kan neerskryf.
a) 24 = ____ × ____
= _____ × _____
= _____ × ______
b) 36 = _____ × ______
= _____ × ______
= _____ × ______
= ______ × ______
= ______ × ______

2. Kom ons oefen die faktore nog ‘n bietjie. Kyk na die produkte (getalle) en skryf dan gepaste faktore vir hulle neer. Die eerste een is vir jou gedoen.

42 45 63 54 64
7 × 6 ...................... ...................... ...................... ....................................
72 108 48 88 96
...................... ...................... ...................... ...................... ....................................

Onthou jy ook nog?

Enige getal vermenigvuldig met 0 se antwoord is altyd 0 . (0 × 6 = 0)

Enige getal vermenigvuldig met 1 se antwoord is altyd die getal self. (9 × 1 = 9)

Aktiwiteit 3:

Om hoofrekene te kan doen [lu 1.9.2]

Nou word die faktore vir jou gegee. Al wat jy in jou eerste hoofrekentoets moet doen, is om goed na die vermenigvuldigingstabel en faktore te kyk en dan net die ontbrekende antwoorde neer te skryf. Sommer maklik, of hoe?

X 4 5 6 7 8 9 12
5 20 ............ 30 ............ 40 ............ 60
6 ............ 30 36 42 ............ 54 ............
7 28 ............ 42 ............ 56 ............ 84
8 ............ 40 ............ 56 ............ 72 ............
9 ............ ............ 54 ............ 72 ............ 108
2 48 60 ............ 84 ............ 108 ............

Voltooi: Ek het ......................... reg!

Aktiwiteit 4:

Om verskillende maniere van skryf in verskillende kulture te beskryf en te illustreer [lu 1.2]

Deur getalle te verdubbel kan ons vinniger by die antwoord van ‘n vermenigvuldigsom uitkom. Ons kan dus hier van die Egiptenare leer. Werk saam met ‘n maat en kyk of julle kan uitvind hoe hulle hierdie berekening gedoen het.

28 × 324

1 × 324: 324 (1 × 324)
Verdubbel 324: 648 (2 × 324)
Verdubbel 648: 1 296 (4 × 324)
Verdubbel 1 296: 2 592 (8 × 324)
Verdubbel 2 592: 5 184 (16 × 324)
Dus: 28 × 324 = 9 072

Questions & Answers

what does preconceived mean
sammie Reply
physiological Psychology
Nwosu Reply
How can I develope my cognitive domain
Amanyire Reply
why is communication effective
Dakolo Reply
Communication is effective because it allows individuals to share ideas, thoughts, and information with others.
effective communication can lead to improved outcomes in various settings, including personal relationships, business environments, and educational settings. By communicating effectively, individuals can negotiate effectively, solve problems collaboratively, and work towards common goals.
it starts up serve and return practice/assessments.it helps find voice talking therapy also assessments through relaxed conversation.
miss
Every time someone flushes a toilet in the apartment building, the person begins to jumb back automatically after hearing the flush, before the water temperature changes. Identify the types of learning, if it is classical conditioning identify the NS, UCS, CS and CR. If it is operant conditioning, identify the type of consequence positive reinforcement, negative reinforcement or punishment
Wekolamo Reply
please i need answer
Wekolamo
because it helps many people around the world to understand how to interact with other people and understand them well, for example at work (job).
Manix Reply
Agreed 👍 There are many parts of our brains and behaviors, we really need to get to know. Blessings for everyone and happy Sunday!
ARC
A child is a member of community not society elucidate ?
JESSY Reply
Isn't practices worldwide, be it psychology, be it science. isn't much just a false belief of control over something the mind cannot truly comprehend?
Simon Reply
compare and contrast skinner's perspective on personality development on freud
namakula Reply
Skinner skipped the whole unconscious phenomenon and rather emphasized on classical conditioning
war
explain how nature and nurture affect the development and later the productivity of an individual.
Amesalu Reply
nature is an hereditary factor while nurture is an environmental factor which constitute an individual personality. so if an individual's parent has a deviant behavior and was also brought up in an deviant environment, observation of the behavior and the inborn trait we make the individual deviant.
Samuel
I am taking this course because I am hoping that I could somehow learn more about my chosen field of interest and due to the fact that being a PsyD really ignites my passion as an individual the more I hope to learn about developing and literally explore the complexity of my critical thinking skills
Zyryn Reply
good👍
Jonathan
and having a good philosophy of the world is like a sandwich and a peanut butter 👍
Jonathan
generally amnesi how long yrs memory loss
Kelu Reply
interpersonal relationships
Abdulfatai Reply
What would be the best educational aid(s) for gifted kids/savants?
Heidi Reply
treat them normal, if they want help then give them. that will make everyone happy
Saurabh
What are the treatment for autism?
Magret Reply
hello. autism is a umbrella term. autistic kids have different disorder overlapping. for example. a kid may show symptoms of ADHD and also learning disabilities. before treatment please make sure the kid doesn't have physical disabilities like hearing..vision..speech problem. sometimes these
Jharna
continue.. sometimes due to these physical problems..the diagnosis may be misdiagnosed. treatment for autism. well it depends on the severity. since autistic kids have problems in communicating and adopting to the environment.. it's best to expose the child in situations where the child
Jharna
child interact with other kids under doc supervision. play therapy. speech therapy. Engaging in different activities that activate most parts of the brain.. like drawing..painting. matching color board game. string and beads game. the more you interact with the child the more effective
Jharna
results you'll get.. please consult a therapist to know what suits best on your child. and last as a parent. I know sometimes it's overwhelming to guide a special kid. but trust the process and be strong and patient as a parent.
Jharna
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Source:  OpenStax, Wiskunde graad 5. OpenStax CNX. Sep 07, 2009 Download for free at http://cnx.org/content/col10993/1.1
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