The phrase "approximate the number of" is correct and usable in written English.
You can use it when discussing estimates or calculations related to quantities or figures.
Example: "To complete the project, we need to approximate the number of resources required."
Alternatives: "estimate the quantity of" or "calculate the amount of".
This can be useful: it can help approximate the number of the dead who were actually combatants, a matter that is often in dispute.
She wanted to do a blood test called an anti-Müllerian hormone (or AMH) test that would approximate the number of viable eggs she had.
The proposed mobility model allows us to approximate the number of mobiles crossing the boundary between two neighbouring cells.
The products of equation 1 were then multiplied by estimated coral cover at each depth to approximate the number of eggs per 1 km2 unit reef as a function of depth.
We can approximate the number of Americans who would be at the typical age to receive a bachelor's degree by evaluating the number of 21-year-olds in the United States population.
A. The retired players will be paid according to their age and the number of years they played in the league, with the latter being used as a way to approximate the number of head hits they absorbed.
To approximate the numbers of larger vessels and the remainder of capillaries we counted lumens in the same sections.
The 1,600 shown on your map as the size of the Colonial Army approximates the number of Washington's troops that were on Chatterton Hill, where the major engagement took place.
In Eq. 22, (sum _{l ne k} left( {1 - p_{l} } right)) approximates the number of products in the demand mood and (sum _{l ne k} left( {p_{l} } right)) approximates the number of products in the production mood.
As this number approximates the number of GAS transcription factors this raises the possibility that sRNA-mediated regulation represents a major mechanism of regulation in this pathogen.
