Wat is die verskil tussen ‘n desimale breuk en ‘n desimale getal? ‘n Desimale breuk verwys na ‘n desimale getal in basis 10. In Suid-Afrika gebruik ons ‘n komma as die desimale simbool. Die plekwaardes aan die regterkant van die komma is tiendes (t), honderdstes (h), duisendstes (d) en so aan. Wat is die grootste…
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…
Hoe bepaal jy ‘n item se prys as daar ‘n persentasie vermeerdering of vermindering is? Met ander woorde, hoeveel moet jy betaal as daar afslag is of as daar ‘n vermeerdering in prys is? Om die nuwe waarde te bepaal, kan ons van twee metodes gebruik maak. Kom ons kyk na die voorbeeld van ‘n…
In hierdie video word daar somme gedoen om die eksponentwette toe te pas op ‘n basiese vlak. Voorkeur van bewerkings speel ‘n groot rol en Graad 7 leerders, ouderdomme 12 en ouer, kan daarby baat deur die verskillende somme saam deur te werk.
Om persentasies te verstaan moet jy dink aan “per sent”. Die “per” beteken “uit” en die “sent” verwys na eenhonderd. So, “persentasie” beteken uit ‘n honderd uit. Persentasies kan geskryf word as gewone breuke. Die voorbeeld 35%, kan ons skryf as 35 uit 100 en wanneer ons die breuk vereenvoudig word dit 7 uit 20….
Is 2 + 3 x 4 gelyk aan 20 of is dit gelyk aan 14? Hoekom is daar verskillende antwoorde? Om te verhoed dat somme verskillende antwoorde het, moet dit in ‘n spesifieke volgorde gedoen word. Ons noem dit die voorkeur van bewerkings. As jy na die video kyk, sal jy leer wat eerste gedoen…
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