Mathematical Literacy Level 2 Module 3

Mathematical Literacy NQF 2 Downloaded from hlayiso.com Maths Lit NQF Level 2

Measurement and time conversions Module 3 Downloaded from hlayiso.com Maths Lit NQF Level 2

Overview 3.1 Time notation 3.2 Conversions with a calculator 3.3 Time calculations Downloaded from hlayiso.com Maths Lit NQF Level 2

Time notation Unit 3.1 Analogue time Digital time Analogue clocks show 12 hours Digital clocks usually show 24 on their faces and represent hours. They use only numbers to time by the position of hands on show the time. the dial. Downloaded from hlayiso.com Maths Lit NQF Level 2

Time notation Unit 3.1 In a.m. and p.m. time, the 24-hour day is divided into two periods of twelve hours each: • Before noon: from 12 a.m. to 12 p.m. • After noon: from 12 p.m. to 12 Downloaded a.m. hlayiso.com from Maths Lit NQF Level 2

Example 3.1 page 49 Unit 3.1 Write the following in 24-hour time. a) 12.15 a.m. b) 3.23 a.m. c) 6.59 p.m. d) 12.23 p.m. a) 12.00 a.m. is midnight shown as 00:00 so 12:15 a.m. is 00:15 b) 03:23 c) Add 12 hours: 18:59 d) 12:23 (just after midday) Downloaded from hlayiso.com Maths Lit NQF Level 2

Exercise 3.1 Unit 3.1 Complete Exercise 3.1 on page 49 of your Student’s Book Downloaded from hlayiso.com Maths Lit NQF Level 2

Conversions with a calculator Unit 3.2 To convert from one unit of measurement to another: Decide whether you are converting to a bigger unit or a smaller unit. ÷ x Converting to a Converting to a bigger smaller unit, your unit, your measurement will be measurement will be smaller, so you will bigger, so you will divide. multiply. Downloaded from hlayiso.com Maths Lit NQF Level 2

Metric System Unit 3.2 In South Africa, we use the metric system, which is a base 10 system. To make conversions easy, we can use a table: km Hm Dm m dm cm mm Downloaded from hlayiso.com Maths Lit NQF Level 2

Conversions on a calculator Unit 3.2 Downloaded from hlayiso.com Maths Lit NQF Level 2

Metric System Unit 3.2 > Example 3.2 on page 50 Convert 23 m to centimetres. km Hm Dm m dm cm mm 2 3 km Hm Dm m dm cm mm 2 3 0 0 = 2 300 cm Downloaded from hlayiso.com Maths Lit NQF Level 2

Metric System Unit 3.2 > Example 3.2 on page 50 Convert 3 450 mm to metres. km Hm Dm m dm cm mm 3 4 5 0 km Hm Dm m dm cm mm 3, 4 5 0 = 3,450 metres Downloaded from hlayiso.com Maths Lit NQF Level 2

Exercise 3.2 and 3.3 Unit 3.2 Complete Exercise 3.2 and Exercise 3.3 on page 50 of your Student’s Book Downloaded from hlayiso.com Maths Lit NQF Level 2

Time calculations Unit 3.3 Time Values in a minute in an hour in a day So time conversions are not metric! 70 minutes + 60 minutes = 130 minutes = 2 hours 10 minutes Downloaded from hlayiso.com Maths Lit NQF Level 2

Example 3.4 page 53 Unit 3.3 Downloaded from hlayiso.com Maths Lit NQF Level 2

Exercise 3.4 Unit 3.3 Complete Exercise 3.4 on page 54 of your Student’s Book Downloaded from hlayiso.com Maths Lit NQF Level 2

Time calculations Unit 3.3 Time conversions > Example 3.5, page 55 a) Convert 3 hours 40 minutes to: i) minutes ii) seconds b) Convert 364 days to weeks. Downloaded from hlayiso.com Maths Lit NQF Level 2

Time calculations Unit 3.3 Time conversions a) i) 60 minutes in an hour (3 x 60) + 40 minutes = 220 minutes ii) 60 seconds in a minute 220 x 60 = 13 200 seconds b) 364 ÷ 7 = 52 weeks Downloaded from hlayiso.com Maths Lit NQF Level 2

Case Study: Planning Study Time Unit 3.3 Downloaded from hlayiso.com Maths Lit NQF Level 2

Exercise 3.5 Unit 3.3 Complete Exercise 3.5 on page 56 of your Student’s Book Downloaded from hlayiso.com Maths Lit NQF Level 2

Timetables Unit 3.3 Definition Timetables are visual tools for planning your hours, days, weeks and months. ” Downloaded from hlayiso.com Maths Lit NQF Level 2

Timetables Unit 3.3 Case Study: Planning study time • Tsepo writes final exams for Marketing in 2 weeks. • He needs to study for about 20 hours. • He has classes until 2 days before the exam. • He must attend classes for 4 hours per day. • He takes 2 hours to travel to college and back each day. • Tsepo works for 3 hours on Monday and Wednesday afternoons. • He practises soccer on Tuesday and Thursday evenings. • He plays soccer on a Saturday from 7.30 until 4 p.m. • He takes 15 minutes to get to and from the soccer club. Use the timetable below to help Tsepo plan his study time. Downloaded from hlayiso.com Maths Lit NQF Level 2

Timetables Unit 3.3 Monday Tuesday Wednesday Thursday Friday Saturday Sunday 05:00 06:00 07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 24:00 Downloaded from hlayiso.com Maths Lit NQF Level 2

Exercise 3.6 Unit 3.3 Complete Exercise 3.6 on page 60 of your Student’s Book Downloaded from hlayiso.com Maths Lit NQF Level 2

Module assessment Module 3 Complete Module assessment on page 61 of your Student’s Book Downloaded from hlayiso.com Maths Lit NQF Level 2

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