The phrase "a precise number for" is correct and usable in written English.
You can use it when referring to a specific quantity or figure that is needed or requested in a particular context.
Example: "The report requires a precise number for the total sales in the last quarter to analyze the company's performance."
Alternatives: "an exact figure for" or "a specific amount for".
Mr Abbas's declaration, in a television interview, was the first time he has given a precise number for the amount of land he is seeking.
The Dewey Decimal System divides books into 10 broad subject areas and several hundred sub-areas and then assigns each volume a precise number -- for example, 332.6328 for Jim Rodgers's investment guide, "Hot Commodities". But on the Internet, a new approach to categorization is emerging.
In the past, Amazon has been reluctant to reveal exact numbers for the quantity of Kindles sold and are even hedging a bit by stating that "over" 1 million Kindles were sold each week in December as opposed to just giving us a precise number for units sold.
Some have criticized the homeless count for leaving out important information and offering a precise number for something that is very hard to tabulate.
Because of the difficulty in distinguishing between the largest ring particles and the smallest moons, determining a precise number of moons for Saturn may not be possible.
Here's the problem: under Section 8's current rules, Washington provides money to local public housing authorities around the country for a precise number of units each year, without regard to the number of families that could benefit from the same amount of money if it was used more effectively.
While hospitalized, each was given a liquid diet containing a precise number of calories and combination of nutrients for as long as required to reduce their weight by 10%.
When asking for a salary, ask for a precise number.
Quite a few people were wounded but it's too early for a precise number".
2. Ask for a precise number.
If so, at what age did you reach that mark? A. Much as I admire Gladwell, I'm suspicious of such a precise number, a one-size-fits-all rule for success or failure.
