Whiteboardmaths.com
7 2
1 5
© 2004 All rights reserved
Conversion Graphs
Use the conversion table to draw a conversion
graph between miles and kilometers.
160
Kilometres (km)
140
Miles
0
50
100
Km
0
80
160
128 km
120
Remember:
100
1km  5/8 of a mile
80
8 km  5 miles
60
Use the conversion
graph to convert
40
20
0
(a) 80 miles into km
(b) 72 km into miles
45 miles
10 20 30 40 50 60 70 80 90 100
Miles
Miles/Km
Conversion Graphs
220
Use the conversion
table to draw a
conversion graph
between oC and oF.
200
180
168oF
Temperature (o F)
160
140
0
60
100
oF
32
140
212
Remember:
120
0oC = 32 F
100
100oC = 212 F
80
60
Use the conversion
graph to convert
40
20
oC
38oC
(a) 76o C to oF
Temperatur
(b) 100 F to C
90 100
e
o
0
10 20 30 40 50 60 70 80
Temperature (oC)
o
9C
Did you know?
F 
 32
5
1. Gabriel Daniel Fahrenheit was a German
physicist would lived mainly in England and
Holland. He devised the scale of
temperature that is now named after him.
2. There is only one temperature at which
oC and oF are numerically equivalent. Can
you find it? See last slide for answer.
3. To convert from oC to oF: multiply by 9,
divide by 5 and add 32. Check it on your
graph!
What do you do to go from oF to oC?
Conversion Graphs
220
Use the conversion
table to draw a
conversion graph
between kg and lbs.
200
180
160
154 lbs
Pounds (lbs)
140
120
kg
0
50
100
lbs
0
110
220
Remember:
100
1 kg  2.2 lbs
80
Use the conversion
graph to convert
60
40
20
0
(a) 70 kg to lbs
(b) 120 lbs to kg
54 kg
Kg/Pounds
10 20 30 40 50 60 70 80 90 100
Kilograms (kg)
Conversion Graphs
220
200
Use the conversion
table to draw a
conversion graph
between inches and
centimetres.
210 cm
180
centimetres
160
140
In
0
20
80
cm
0
50
200
120
Remember:
100
1 inch  2.5 cm
80
Use the conversion
graph to convert
60
40
20
0
(a) 84 inches to cm
40 inches
10 20 30 40 50 60 70 80 90 100
Inches
(b) 100 cm to inches
Inch/cm
Conversion Graphs
220
Use the conversion
table to draw a
conversion graph
between hectares and
acres.
200
180
160
140
Hec
0
40
80
Ac
0
100
200
Acres
120
Remember:
100
80
76 acres
Use the conversion
graph to convert
60
40
(a) 30 hectares to
acres.
20
0
1 Hectare  2.5 acres
10 20 30 40 50 60 70
Hectares
Hectar
72 hectares
(b)
180 acres to
es/Acre
hectares.
80 90 100
s
Conversion Graphs
Use the conversion
table to draw a
conversion graph
between ounces and
grams.
3000
2700
2400
oz
0
60
100
1800
g
0
1800
3000
Grams (g)
2100
1500
Remember:
1350 g
1 ounce  30 g
1200
900
Use the conversion
graph to convert
600
300
0
(a) 45 ounces to g.
Grams/Oun
ces
90 100
66 oz
10 20 30 40 50 60 70 80
Ounces (oz)
(b) 2 kg to oz
Conversion Graphs
Use the conversion
table to draw a
conversion graph
between gallons and
litres.
500
450
400
350
Litres
300
100
Litres
0
225
450
Use the conversion
graph to convert
137 litres
100
0
50
1 gallon  4.5 litres
200
50
0
Remember:
250
150
Gall
(a) 30 gallons to
litres
88 gallons
(b) 400 litres to
Gallons/Litres
gallons.
10 20 30 40 50 60 70 80 90 100
Gallons
Conversion Graphs
Use the conversion table to draw a conversion
graph between pounds (£) and Euros (€)
160
£
0
30
100
€
0
44
145
140
Conversion Factor
100
£1 = 1.45 Euros
Euros (€)
120
80
€72
Use the conversion
graph to convert
60
40
20
0
(a) £50 to euros €
£82
10 20 30 40 50 60 70 80 90 100
Pounds (£)
(b) €120 to pounds
£/Euros
Conversion Graphs
Use the conversion
table to draw a
conversion graph
between pounds (£)
and US dollars ($)
180
160
US Dollars ($)
140
120
$108
100
£
0
40
100
$
0
72
180
80
Conversion Factor
60
£1 = $1.8 US
40
20
0
Use the conversion
graph to convert
£78
(a) £60 to Us $ €
10 20 30 40 50 60 70 80 90 100 (b) $140 to £
Pounds (£)
£/$
Graph
Paper
oF
100
80
Temperature (o F)
60
40
20
-50 -40 -30 -20 -10 0
-20
-40
-60
10 20 30 40 50
-
o
40 C
-80
Temperature (oC)
oC