Scales
A map scale is 1 : 100. 1 cm on the map is how many cm in real life?
100 cm (1 m)
How many minutes are in 3 hours?
180 minutes
Write 3:00 pm in 24-hour time.
1500
How long is it from 9:00 am to 11:30 am?
2 h 30 min
What does a dash (–) mean in a bus or train timetable?
The service does not stop there
What is the formula for speed?
Speed = Distance ÷ Time
A plan has scale 1 : 50. A wall is 6 cm long on the plan. How long is the real wall, in metres?
3 m (6 × 50 = 300 cm)
How many seconds are in 5 minutes?
300 seconds
Write 0745 in 12-hour time.
7:45 am
How long is it from 1345 to 1620?
2 h 35 min
Buses leave every 20 minutes, starting at 0710. What time does the 4th bus leave?
0810 (0710, 0730, 0750, 0810)
A car travels 180 km in 3 hours. What is its average speed?
60 km/h
A map has scale 1 : 25 000. Two farms are 4 cm apart on the map. How far apart are they in real life, in km?
1 km (4 × 25 000 = 100 000 cm)
Write 2.75 hours in hours and minutes.
2 h 45 min (0.75 × 60 = 45)
Write 11:20 pm in 24-hour time.
2320
How long is it from 10:40 am to 2:15 pm?
3 h 35 min
A train leaves Perth at 0915 and arrives in Northam at 1047. How long is the trip?
1 h 32 min
A truck travels at 80 km/h for 2.5 hours. How far does it go?
200 km
A 5 m shed is drawn 10 cm long on a plan. What is the scale of the plan?
1 : 50 (500 cm ÷ 10 cm)
Write 1 hour 12 minutes as a decimal number of hours.
1.2 hours (12 ÷ 60 = 0.2)
Write 0005 in 12-hour time.
12:05 am
A shift starts at 2150 and finishes at 0130 the next morning. How long is the shift?
3 h 40 min
Trains arrive in Cunderdin at 0752, 0817 and 0844. You need to be in Cunderdin by 0830. What is the latest train you can catch?
The 0817 train
A cyclist rides 45 km at 18 km/h. How long does it take, in hours and minutes?
2 h 30 min (45 ÷ 18 = 2.5 h)
A map has scale 1 : 200 000. Two towns are 15 km apart. How far apart are they on the map, in cm?
7.5 cm (15 km = 1 500 000 cm; ÷ 200 000)
How many hours are in 3 weeks?
504 hours (3 × 7 × 24)
A movie starts at 2140 and runs for 2 h 35 min. What time does it finish, in 12-hour time?
12:15 am (0015)
A bus leaves at 0855 and the trip takes 3 h 47 min. What time does it arrive (24-hour time)?
1242
A bus leaves Cunderdin at 0815 and arrives in Northam at 0910. A train then leaves Northam at 0935 and arrives in Perth at 1105. How long is the whole trip?
2 h 50 min (0815 to 1105)
A ute travels 30 km in 20 minutes. What is its average speed in km/h?
90 km/h (20 min = ⅓ h; 30 ÷ ⅓)