**The Game of Number Guess – the
Decimal Version
**from funbrain.com

- Play the number decimal guess game.
- Play the decimal darts game
- Play Guess my number (from funbrain.com)

**Description**

The game is a simple
number-guessing game: students try to guess a “mystery number” and
are given clues as to whether their guesses are too high or too low. Students
who win get to pick the next number. Winning
means you must give the clues to the class, and giving the too-high or too-low
clues can be a challenge for many students. It turns that you can guess the
number within a certain number of guesses if you guess optimally. In fact,
you can always
guess a number between 1 and 10 within 5 moves. (Try it.)

The assumption of this game is that the mystery number will be a whole number. But
what if 4 is too big and 3 is to small? What would be your next guess?
If you guess 3.5 that’s too big.

One way to look at the problem is to think of the numbers living on a line
from 2 to 6.

Notice that the next guess should be between 3 and 3.5.