2 Working With Time
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WORKING WITH TIME WORKED EXAMPLE 1 MENTAL STRATEGY
Mentally calculate the time interval between these pairs of times. a 4:35 p.m. to 9:10 p.m.
b 5 h 20 min 20 s to 7 h 40 min 10 s
c What is the time 7 hours 40 minutes after 11:52pm?
WORKED EXAMPLE 2 USING MATHEMATICAL STRATEGY What is the difference in time between 8:35am and 3:10pm?
WORKED EXAMPLE 3 USING THE CALCULATOR Find 7 h 5 min − 3 h 24 min.
Time
Page 1 of 2
WORKED EXAMPLE 4 USING TIMETABLES
Use this train timetable for Bathurst to Penrith to answer these questions.
a How long does it take to travel from: i Bathurst to Lithgow in the morning? ii Lithgow to Penrith in the morning? iii Bathurst to Penrith in the afternoon? b Luke travels from Lithgow to Bell in the morning and then from Bell to Katoomba in the afternoon. What is Luke’s total travel time?
CLASS/HOMEWORK
TEXT FROM PAGE 346 EXERCISE 7B QUESTIONS 1-3, 4X1 COLUMN, 5-18. NOTE THE USE OF A CALCULATOR FOR THOSE QUESTIONS MARKED WITH A CALCUALTOR.
Time
Page 2 of 2
Mentally calculate the time interval between these pairs of times. a 4:35 p.m. to 9:10 p.m.
b 5 h 20 min 20 s to 7 h 40 min 10 s
c What is the time 7 hours 40 minutes after 11:52pm?
WORKED EXAMPLE 2 USING MATHEMATICAL STRATEGY What is the difference in time between 8:35am and 3:10pm?
WORKED EXAMPLE 3 USING THE CALCULATOR Find 7 h 5 min − 3 h 24 min.
Time
Page 1 of 2
WORKED EXAMPLE 4 USING TIMETABLES
Use this train timetable for Bathurst to Penrith to answer these questions.
a How long does it take to travel from: i Bathurst to Lithgow in the morning? ii Lithgow to Penrith in the morning? iii Bathurst to Penrith in the afternoon? b Luke travels from Lithgow to Bell in the morning and then from Bell to Katoomba in the afternoon. What is Luke’s total travel time?
CLASS/HOMEWORK
TEXT FROM PAGE 346 EXERCISE 7B QUESTIONS 1-3, 4X1 COLUMN, 5-18. NOTE THE USE OF A CALCULATOR FOR THOSE QUESTIONS MARKED WITH A CALCUALTOR.
Time
Page 2 of 2
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