Numbers 3:22

The number of all the males a month old or more was 7,500.
BSB · Berean Standard Bible
Those that were numbered of them, according to the number of all the males, from a month old and upward, even those that were numbered of them were seven thousand and five hundred.
KJV · King James Version
Those who were counted of them, according to the number of all the males from a month old and upward, even those who were counted of them were seven thousand five hundred.
WEB · World English Bible
Those that were numbered of them, according to the number of all the males, from a month old and upward, even those that were numbered of them were seven thousand and five hundred.
ASV · American Standard Version

Related passages

From the Treasury of Scripture Knowledge, grouped by the word they explain.

from a month old
The males of all the other tribes were numbered from twenty years old and upwards; but, had the Levites been numbered in this way, they would not have been nearly equal in number to the first-born of the twelve tribes. Add to this, that as there must have been first-born of all ages in the other tribes, it was necessary that the Levites, who were to be their substitutes, should also be of all ages; and it appears to have been partly on this ground, that the Levites were numbered from a month old and upwards.
Numbers 4:38–40