Page 360 - Math Smart - 7

e) Jackie arrives at Lake station at 07 45. She would like to spend as long as possible at Lake
station but she needs to be at Canyon West station by 09 10. How long can Jackie spend at
Lake station?
f) Jim catches the train from Castle station to work in River Bend. He should be at work by
09 00. It takes him 10 min to walk from home to Castle station. It takes Jim 10 min to walk to
work from River Bend station. What is the latest time Jim can leave home and get to work
on time?
O Express

a) 92 m^ in cm^ b) 7000 mm^ in cm^ 35 000 cm^ in
d) 150 000 mm^ in m^ and e) 1.05 cm^ in mm^.

O This watch face measures 3.2 cm by 4.1 cm.
a) Find the area in mm^.
b) Find the area in cm^.
c) Find the perimeter in mm.
d) Find the perimeter in cm.

O Neo has a garden with the dimensions 7 m by 5 m.
In the centre of the garden, there is a square fish
pond with a length of 3 m.

Calculate:
a) the perimeter of the garden.
b) the perimeter of the fishpond.
c) the area of the garden including the fishpond.
7 m
d) the area of the garden without the fishpond.
^ Challenge! The town council wants to tar the streets in an area as shown. The streets are 10 m
wide. The blocks (including the gray pavements) are 1 km long and 500 m wide.

a) Calculate the area that needs to be tarred.

1 1
block

street

1 1

b) The roads have dotted lines painted on them to indicate the lanes. If each white rectangle
that forms each dash on the road measures 80 cm by 30 cm, what is the area of the shaded
portion on this stretch of road?
18m

5 m

UNIT 15 I Measuring Time, Area, Perimeter and Volume