How to say number of times/frequency/order number in Chinese 次数

这次数学考了个零蛋。 ( This math exam was a bit odd. )

他们见面的次数日渐稀疏 ( The number of times they meet is sparse )

他请假的次数太多，扣了不少工资。 ( He took too many leave and deducted a lot of salary. )

在这次数学竞赛中，他的成绩排名第二。 ( In this math competition, he finished second. )

这学期他缺席次数最少，学习进步较快 ( He has the fewest absentees this semester and has made rapid progress )