Final answer:
The student needs 16 full cases and 5 additional units to achieve the requirement of 165 units, with each case containing 10 units.
Step-by-step explanation:
To calculate the number of cases and the number of additional units needed when a student has to get 165 units and each case contains 10 units, we need to perform a division and a modulus operation. First, we divide the total number of units needed by the number of units per case to find the full cases required:
165 units ÷ 10 units per case = 16 cases with 5 units left over
Then, to find out the remaining units we can't fit into a full case, we calculate the modulus (the remainder of the division):
165 units % 10 units per case = 5 units
Therefore, the student will need 16 full cases and have 5 additional units.