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In hierdie video het jy die geleentheid om spesifieke somme te doen en dan te sien hoe dit verduidelik word. Moenie huiwer om ons vorige videos oor heelgetalle te kyk as jy nie presies kan onthou hoe die somme werk nie. Onthou om altyd die volgorde van bewerkings (BODMAS) toe te pas.
Het jy al ooit gewonder hoekom 3 x -2 = -6? Of met ander woorde, hoekom ‘n positiewe heelgetal vermenigvuldig met ‘n negatiewe heelgetal se antwoord ‘n negatiewe heelgetal is? Miskien het jy ook al gewonder waarom ‘n negatiewe heelgetal vermenigvuldig met ‘n negatiewe heelgetal se antwoord ‘n positiewe heelgetal is, soos –3 x -3…
Wanneer jy hierdie video kyk sal jy sien dat mens aan heelgetalle kan dink soos die op en af beweging in ‘n hysbak. As jy op beweeg, is die teken positief en as jy af beweeg is die teken negatief. Wanneer ons die hysbak-voorbeeld 90 grade kloksgewys roteer, is dit soortgelyk aan ‘n getallelyn waar…
Die reële getalstelsel bestaan uit rasionale en irrasionale getalle, en word in hierdie video verduidelik. Rasionale getalle bestaan uit verskeie getalreekse. Eerstens kry ons natuurlike getalle. Natuurlike getalle begin by 1 en ons kan dit skryf as N = {1; 2; 3; 4; …}. Dan het ons telgetalle wat uit al die natuurlike getalle bestaan…
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