Desimale getalle – Graad 8 en 9 Somme
Doen die somme om verskillende bewerkings met desimale getalle in te oefen.
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Doen die somme om verskillende bewerkings met desimale getalle in te oefen.
Wanneer jy desimale getalle met veelvoude van 10 moet maal (bv. 10, 100 en 1 000)|, moet nie net dadelik die “komma skuif” nie. Verstaan eers wat jy doen. B.v. 1,12 x 100. Jy kan 1,12 skryf as 112 honderdstes (as ‘n gewone breuk) en wanneer jy 112/100 met 100 maal, “kanselleer” die 100s mekaar uit….
Wanneer jy desimale getalle deel met natuurlike getalle, volg jy basies die langdeel metode. Hou net mooi kop wanneer jy “oor die komma beweeg”. Onthou ook dat jy nie ‘n res kan hê met hierdie somme nie, aangesien die plekwaardes aan die regterkant van die komma reeds ‘n res is. In die geval waar die…
‘n Maklike manier om desimale getalle op te tel of af te trek is deur gebruik te maak van die kolommetode. Wanneer jy hierdie metode gebruik moet jy altyd die kommas van die verskillende getalle onder mekaar skryf en daarna die korrekte getalle by die ooreenkomstige plekwaardes skryf. Daarna tel jy op of trek jy…
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…
Wat het gewone breuke, persentasies en desimale getalle (breuke) in gemeen? Hulle kan almal omgeskakel word na mekaar. Wanneer ‘n gewone breuk, soos drie kwarte omgeskakel word na ‘n persentasie, moet ons die noemer gelyk maak aan 100. Hoe doen ons dit? Vermenigvuldig die huidige noemer van kwarte met 25 sodat die noemer 100 (honderstes)…
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