Alana plays Guess My Number

Today in my maths learning I played a game called Guess My Number. Paula wrote a secret number down on a piece of paper and I had to try and guess it! My strategy was to ask questions like "Is the number odd or even?" and the answer was "Even". "Is it between 200 and 400?" and the answer was "Yes". Now I was able to say if it was between 200 and 300 and I kept asking questions until I narrowed it down and guessed the correct answer which was 268.
Now it is my turn to write down a secret number for Paula to guess.