1, never come (guess the math term 1)

Answer: No change.

2. Needless to say (guess the math term 1)

Answer: known.

3. Move and count (guess the math term 1)

Answer: Operation.

4. Cross the river to answer (guess the mathematical term 1) A: Corresponding.

5. Do it again (guess the math term 1)

Answer: plural.

6. Recruit actors (guess the math term 1)

Answer: make up the angle.

7, eighteen pounds (guess math noun one)

Answer: Analysis.

8. Medical Department (guess the math term 1)

Answer: formula.

9. Ask people to do things (guess the math noun 1)

Answer: Looking for a job.

10, audit (guess the mathematical term 1) Answer: logarithm.