Basic HTML Version
36
SECTION 1
10 – 5 = 5
ten minus/take away five is five 10 x 2 = 20 ten times two equals twenty
10 x 9 = 90
ten nines are ninety/ten times nine are ninety
10 ÷ 4 = 2 ½
ten divided by four is two and a half
VERBS
+ =
add
– =
subtract
(or
deduct
or
take away
) x =
multiply
÷ =
divide
•
(x-y)/z x minus y over z
•
x – y/z x minus y over z
E
Fractions.
1/3 one third/a third
2/5
two fifths
5/6 five sixths
3/4
three quarters
1/2 one half/a half
1/20 one twentieth
g
g
g
g
g
g
g
g
g
g
2
Read these numbers:
a
0.05
b
2/5
c
15²
d
3 x 8 = 24
e
-5°C
f
5.04
g
the dollar is at 1.95
h
(5-3)
2
Metric and Imperial system
The UK and the USA use the Imperial system but there are differences. Conversion tables below showing
conversion from the Imperial to the Metric system and back.
Unit Conversion Tables
METRIC IMPERIAL
3
Pair work
Draw up a list of numbers, keeping them hidden, and dictate them to your partner. Has
he/she written them correctly? Now swop roles.
Now try write some simple calculations, dictate them, and ask your partner to do the calculations
(out loud in English). Again take turns swapping roles.
Imperial
1 inch
1 foot (= 12 inches)
1 yard (= 3 feet)
1 mile (= 1,760 yards)
1 nautical mile (= 1.1508 miles)
Metric
25.4 millimetres
0.3048 metre
0.9144 metre
1.6093 kilometres
1.852 kilometres
Imperial
0.0394 inch
0.3937 inch
3.937 inches
1.0936 yards
109.36 yards
0.6214 miles
Metric
1 millimetre (mm)
1 centimetre (= 10 mm)
1 decimetre (= 10 cm)
1 metre (= 100 cm)
1 hectometre (= 10 m)
1 kilometre (= 1000 m)
Linear measure – length & distance
g
f
Imperial (UK)
1 fluid (fl) ounce (oz) (= 1/20 pint)
1 gill (= 1/4 pint)
1 pint (= 20 fl oz)
1 quart (= 2 pints)
1 gallon (= 4 quarts)
1 peck (= 2 gallons)
1 bushel (= 4 pecks)
Metric
28.41 ml
142.07 ml
568.26 ml
1.1365 ml
4.546 litres
9.092 litres
36.369 litres
Imperial (UK)
0.002 pint
0.018 pint
0.176 pint
1.76 pints
2.20 gallons
2.75 bushels
Metric
1 millilitre (ml)
1 centilitre (= 10 ml)
1 decilitre (= 10cl)
1 litre (= 1000 ml)
1 dekalitre (= 10 l)
1 hectolitre (100 l)
Capacity measure (Volume - liquids)
g
g
Progetto FOR MECHANICALS_unit_1.indd 36
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