TermWeek 2Chapter 1 Numbers, ratio, rate and finance23Check your skillsExercise 1.13• Use a calculator where necessary and write your answers correct to two decimalplaces.1.V121; -; V40; 0,15; 0,3; 23; 19; 27; {100, võ; -0,25From the list of real numbers in the box above, write down all the numbersthat are:a) whole numbersb) integersc) rational numbersd) irrational numbers.2. a) Write each of the following numbers as the product of its prime factors:36; 54; 72b) Determine the HCF of 36, 54 and 72.c) Determine the LCM of 36, 54 and 72.3. A car travels at a constant speed of 112 km per hour.Calculate how far the car will travel in 15 minutes.4. Three business partners divide their profit of R240 500in the ratio 5 : 3: 2, according to the number of sharesthat they own. Calculate how much money each ofthe partners receives.5. Water is pumped into a dam at 80 litres per minute.How long will it take to pump 130 000 litres ofwater into the dam?6. One girl is 36 cm taller than another.Compare the height of the taller girl to that of theshorter girl in the form of a ratio in its simplest formin each of the following situations:a) The shorter of the two is 144 cm.b) The taller girl is 120 cm.24Classroom Mathematics Grade 9

Name: TermWeek 2Chapter 1 Numbers, ratio, rate and finance23Check your skil
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Description: TermWeek 2Chapter 1 Numbers, ratio, rate and finance23Check your skillsExercise 1.13• Use a calculator where necessary and write your answers correct to two decimalplaces.1.V121; -; V40; 0,15; 0,3; 23; 19; 27; {100, võ; -0,25From the list of real nu