Mathematics and Mathematical Literacy - Thutong

Mathematical Literacy(NCS)/Grade 11/ P2 100 ExemplarMEMORANDUMdoing this the graph emphasises thedifference between the males and females.4.4 There are only 4 people in the sample whoare older than 35 years of age. This is toosmall a number in this age group to test thepreference of flavours for the wholepopulation of 35 years of age. 24.5 Gained: It is easy to compare the males andfemales when looking at a particular flavour.For example: it is easy to see that moremales than females like Licorice flavouredice-cream. Lost: You cannot compare the males withthe other males i.e. you can’t see which ofthe flavours the males like best. 24.6 13-17 18-24 25-34 35-49Choc 20 34 6 3Straw 6 14 5 1 5.1 Number of kilograms of ice cream:45 × 0,200kg = 9kgNumber of kilograms of dry-ice:94 + 11 2 = 33 4 kgHe will need:3 3 4 kg × 2 = 71 2 half-kilogr ams of dry-iceThabo must buy 8 half-kilograms of dry-ice5.2 Number of kilograms of dry-ice:7 ÷ 2 = 3 1 2 kgNumber of kilograms of food:x5 + 1 2 = 31 2 kgx = 3 × 5 = 15kgNumber of ice creams:15kg ÷ 0,2kg = 75 ice creams 46Answer by age4035Number of people3025201510ChocolateStrawberry5013 - 17 18 - 25 25 - 34 35 - 49Age categorieslabels on graphgraph correct 84.7 Advantage of “Answer by age” usingpercentage: You can compare the differentflavours within an age group even althoughthere are a different number of people ineach age group i.e the 25-34 age group likestrawberry the most out of all the agegroups.Disadvantage: You can’t compare within thesame age group. Advantage of “Answer by age” using actualnumbers: You can compare the different agegroups. i.e you can see that strawberry is themost popular of all the age groups. Disadvantage: You can’t compare within thesame flavour as the number of participantsin each age group differs. 44.8 Licorice: (12 ÷ 149)% × 20 = 1,6Bubblegum: (32 ÷ 149)% × 20 ≈ 4Vanilla: (16 ÷ 149)% × 20 ≈ 2Stawberry: (26 ÷ 149)% × 20 ≈ 3Chocolate: (63 ÷ 149)% × 20 = 8,5Because chocolate is the most popularflavour it would be sensible to rather buy 9boxes of chocolate and only 1 box oflicorice. 6Copyright reserved