ADJ

cardinal, decimal, ordinal
even, odd
Houses on this side of the road have even numbers
high, low
prime
random
lucky, unlucky
Many people think 13 is an unlucky number
winning
the winning numbers in tonight's lottery

VERB + NUMBER

add, divide, multiply, subtract, take away
Add all the numbers together, divide by ten, and take away the number you first thought of

PHRASES

in round numbers
There were about 150 there, in round numbers
number crunching (= doing calculations)
There's more to accountancy than just number crunching

ADJ

considerable, enormous, great, huge, inordinate, large, substantial, vast
record
a record number of enquiries
disproportionate, surprising
fair, reasonable, significant
We've had a fair number of complaints about the new phone system
finite, infinite
There are an infinite number of solutions to the problem
equal
The candidates received an equal number of votes
maximum, minimum
average, mean, median
adequate, sufficient
limited, small
growing, increasing, rising
exact, precise
Many people have died in the epidemic?the precise number is not known
indefinite, unspecified
approximate
total

VERB + NUMBER

grow in, increase in
Factories had increased in number between the wars
decrease in, reduce in

NUMBER + VERB

double, grow, increase
decline, diminish, drop, dwindle, fall (off/down)
Shark numbers have dwindled as a result of hunting

PREP

in ~
The paintings, twelve in number, are over 200 years old

PHRASES

a decline/drop in numbers
The decline in numbers of young people means that fewer teachers will be needed
a growth/an increase in numbers, few/limited/small in number
Wild dogs are now few in number

ADJ

account, identity, registration, serial, etc.
flat, house

PREP

at ~
We live at number 21

ADJ

fax, phone, telephone
home, office, work
wrong
I keep getting the wrong number

VERB + NUMBER

call, dial, phone, ring
get