Mathematics mainly examines students' computing ability and logical thinking ability. If there is a unit in the math fill-in-the-blank problem, there is no need to add a unit to the result, and there will be no deduction.

If the process and results are correct, but there is no writing unit, the points will be deducted simply. Some teachers may deduct only 0.5 points as appropriate, mainly to cultivate students' habit of answering questions rigorously, but it will not affect the scores of too many papers.