$\left[\begin{array}{l}{[\underline{\text { Arithmetic. Mental calculation, etc. }}]} \\ {[\underline{\text { Evenness and oddness }}]}\end{array}\right.$

How many odd numbers are there between 300 and 700?
There are 399 numbers between 300 and 700, and there is 1 fewer even number than odd numbers. Therefore, there are 200 odd numbers.

## Answer

200 numbers.