For Young Children
Child: I am thinking of a number between 1 and 10.
You: Is the number greater than 7?
Child: No.
You: Is the number greater than 3?
Child: Yes.
You: Is the number less than 5?
Child: No.
(The child could be thinking of 6 or 7.)
For More Advanced Children
Child: I am thinking of a number between 1 and 100.
You: Is it more than 50?
Child: No.
You: Is it an even number?
Child: No.
You: Is it more than 20 but less than 40?
Child: Yes.
You: Can you reach it by starting at 20 and counting by 5s?
Child: Yes.
(The child could be thinking of 25 or 35.)
After you've guessed your child's number it
is their turn to guess and ask similar questions.