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Summary Graad 9 Biologie (lewenswetenskap) Opsommings
- Course
- Life Sciences
- Institution
- 10th Grade
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BiologieJANUARIE – MEI 2022
,Die Wetenskaplike Metode:
oBerekeninge
oTrek van tabelle
oTrek van grafieke
, Algemene berekeninge in die
wetenskaplike metode sluit in:
oGemiddeldes
oPersintasie berekeninge
oVerhoudings
, Persintasie berekeninge:
oStel ‘n verhouding van die hele hoeveelheid voor. – Byvoorbeeld - ‘n Volle maaltyd weeg 30
o120 g van hierdie maaltyd was kolhidrate
oWatter persintasie van die maaltyd was kolhidrate
Persintasie berekening voorbeeld:
𝐻𝑜𝑒𝑣𝑒𝑒𝑙ℎ𝑒𝑖𝑑 𝐾𝑜𝑙ℎ𝑖𝑑𝑟𝑎𝑡𝑒
oD.w.s Persinatasie (%) = x 100
𝑇𝑜𝑡𝑎𝑙𝑒 𝐻𝑜𝑒𝑣𝑒𝑒𝑙ℎ𝑒𝑖𝑑 𝑣𝑎𝑛 𝑚𝑎𝑎𝑙𝑡𝑦𝑑
120 𝑔𝑟𝑎𝑚
= x 100
300 𝑔𝑟𝑎𝑚
= 0,4 x 100
= 40%
40% van die maaltyd bestaan uit kolhidrate
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