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Lesson #27 –
Unit Conversions
1 ft
12 in = __
100 cm = __
1 m
1 kg = 2.24
___ lbs
1 cm2 =100
__ mm2
Everyday
Conversions
1 mile = 1.6
__ km
1.03 Cdn $ = __
1 US $
1 dozen
12 items = __
How to Convert Stuff
How to Convert Stuff
eg. 2 Convert 150 lbs to kg?
General Rule of Line Conversions
WHAT YOU’VE GOT
×
WANT
HAVE
=
NEED
68 in
Eg. 1 Let’s convert ________
from in to cm.
€
68 in
×
2.54 cm
1 in
€
=
172 cm
=
1 kg
2.24 lbs
67 kg
eg.
3
Convert
50
$
to
Japanese
¥
(Yen)?
€
50 $ ×
84 ¥
1 $
=
4200 ¥
€
€
€
Metric Staircase
€
King
Henry
Died
Mother
Didn’t
Care
Much
150 lbs ×
X 10
X 10
X 10
Convert these lengths using KHDMDCM;
km
kilo
€
eg. 4 Convert 24 m into cm
hm hecta
24 m ×
dam deca
m
dm deci
100 cm
1 m
=
2400 cm
eg. 5 Convert 6.5 dam into km
€
cm centi
mm milli
€
6.5 dam
×
1 km
100 dam
=
0.065 km
€
€
1
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Converting Area;
eg. 6 Convert 6 cm2 into mm2
2
600 mm2
6 cm2× 10 mm
1 cm
=
eg. 7 Convert 2
€
2 dam2 ×
dam2
km2
into
2
0.0002 km2
1 km
100 dam
Homework
pg. 176 Act 1
pg. 177 #1, 2acegik
=
€
€
€
2