Here are the matches for the words to the correct inequalities:
- a is greater than or equal to 10. - a ≥ 10
- a is greater than 10. - a > 10
- a ≤ 10 - a is at most 10.
- a is at least 10. - a ≥ 10
- a is less than or equal to 10. - a ≤ 10
Since "a is at least 10" has the same meaning as "a is greater than or equal to 10," my previous two matches overlap on that.